Preparation of copper(ii) sulfate from copper(ii) nitrate

Size: px
Start display at page:

Download "Preparation of copper(ii) sulfate from copper(ii) nitrate"

Transcription

1 Student s Name: Date: Background Preparation of copper(ii) sulfate from copper(ii) nitrate The purpose of this laboratory activity is to prepare copper(ii) sulfate from copper(ii) nitrate. This is done by using the following steps: 1. Precipitation of copper (II) hydroxide Cu(OH) 2 from copper (II) nitrate Cu(NO 3 ) 2 solution by the addition of NaOH solution. 2. Conversion of copper (II) hydroxide Cu(OH) 2 to copper(ii) oxide CuO by heating. 3. Neutralisation of copper (II) oxide CuO with sulfuric acid to form copper (II) sulfate CuSO Evaporation of copper (II) sulfate CuSO 4 (l) solution to form solid copper (II) sulfate CuSO 4 (s). Equipment and Chemicals analytical balance hot plate and magnetic stirrer beaker 250 ml (x 2) sodium hydroxide [NaOH] solution 2 mol L -1 (40 ml) R.O. water in wash bottle sulfuric acid [H 2 SO 4 ] 2 mol L -1 (30 ml) stirrer bar one boiling chip copper (II) nitrate trihydrate [Cu(NO 3 ) 2. 3H 2 O] (5g) spatula Safety dry filter paper on watch glass sodium hydroxide - sulfuric acid - copper (II) sulfate - H 2 SO 4 NaOH harmful CuSO 4.5H 2 O CuSO 4 copper2sulfate.doc Adapted from STAWA Exp 28 Page 1

2 Method Part A Precipitation of copper(ii) hydroxide Cu(OH) 2 from copper(ii) nitrate Cu(NO 3 ) 2 solution 1. Weigh out approximately 4.8 g of Cu(NO 3 ) 2. 3H 2 O into a TARED 250 ml beaker on the analytical balance. 2. Record the exact mass used: 3. Dissolve the copper (II) nitrate pentahydrate - Cu(NO 3 ) 2. 3H 2 O in about 20 ml of R.O. water. 4. Put the beaker on a magnetic stirrer and add a stirrer bar carefully to the solution. 5. Turn the stirrer on SLOW speed. 6. Slowly add 30 ml of 2 mol L -1 sodium hydroxide - NaOH solution. 7. Describe what you see happening in the beaker as you add the NaOH: Part B - Conversion of copper(ii) hydroxide Cu(OH) 2 to copper(ii) oxide CuO 1. Add 100 ml of R.O. water to the copper hydroxide - Cu(OH) 2 precipitate the beaker. 2. Keep the stirrer ON 3. Turn the heat on LOW and keep heating until the solution turns FROM LIGHT BLUE colour to BLACK. This is the colour of copper (II) oxide - CuO. 4. Turn OFF the hot plate and let the beaker cool down. 5. Without losing any of the SOLID, slowly DECANT as much of the liquid as possible from the beaker into another 250 ml beaker (labelled WASTE beaker). 6. To the first beaker (the one with the black solid in it), add about 100 ml of R.O. water. copper2sulfate.doc Adapted from STAWA Exp 28 Page 2

3 7. Use the magnetic stirrer to stir the SUSPENSION for one minute. 8. When the solid has settled to the bottom, DECANT the liquid into the WASTE beaker. Part C - Neutralisation of copper(ii) oxide CuO with sulfuric acid to form copper(ii) sulfate CuSO Put the beaker with the black solid suspension on the magnetic stirrer and set the stirrer to a SLOW stirring speed. 2. Slowly (and carefully) dropwise add about 20 ml of sulfuric acid - H 2 SO 4 to the suspension of CuO. 3. Look carefully to see if any of the black solid is still in the beaker. If there is, add more drops of sulfuric acid H 2 SO Use a magnetic rod to remove the stirrer bar. 5. Describe what you observed inside the beaker as the acid was added: Part D - Evaporation of copper(ii) sulfate CuSO 4 (l) solution to form solid copper(ii) sulfate CuSO 4 (s). 1. Add a boiling chip (anti-bumping granule) to the solution and heat the solution on the hot plate until the volume is reduced to about 10 ml. Use the markings on the side of the beaker as a guide to the volume. 2. Turn OFF the heat and take out the boiling chip. Use a clean spatula to do this. 3. Crystals of copper (II) sulfate should start to form as the solution cools down. If there is not enough time to precipitate out the crystals, put a label on the beaker with your name, date and compound s name/formula. Put the beaker in an approved storage cupboard until the next lesson. See the lecturer for a safe place to store the solution. copper2sulfate.doc Adapted from STAWA Exp 28 Page 3

4 Part E Weighing the copper(ii) sulfate crystals 1. Transfer the copper (II) sulfate pentahydrate crystals CuSO 4.5H 2 O to a pre-weighed or TARED filter paper or weighing bottle. Record the mass of crystals in the space: Post Lab Assignment 1. Write equations to represent the four steps in the preparation of CuSO 4.5H 2 O. Step 1 Step 2 Step 3 Step 4 copper2sulfate.doc Adapted from STAWA Exp 28 Page 4

5 2. Use the starting mass of Cu(NO 3 ) 2. 3H 2 O and the equations from Question 1. to calculate the theoretical amount of copper sulfate that you should have made. Show each step of your calculation in the space below: Step 1 Step 2 Step 3 Step 4 3. Calculate the percentage yield of copper(ii) sulfate pentahydrate based on the amount of copper(ii) sulfate pentahydrate that you made and the theoretical amount that you calculated in Question 2. mass of CuSO4.5H 2O produced % yield CuSO4.5H 2O = x mass of CuSO.5H O theoretical copper2sulfate.doc Adapted from STAWA Exp 28 Page 5

6 5. a) Was your percentage yield for CuSO 4.5H 2 O = 100%? b) Briefly describe what events could have occurred during the preparation to give you a result other than 100% yield. 6. What could you do next time to improve your percentage yield of CuSO 4.5H 2 O? copper2sulfate.doc Adapted from STAWA Exp 28 Page 6

PERCENT Y IELD: COPPER T Ra NSFORMATIONS

PERCENT Y IELD: COPPER T Ra NSFORMATIONS Experiment 4 Name: 39 PERCENT Y IELD: COPPER T Ra NSFORMATIONS In this experiment, you will carry out and observe a reaction sequence where copper metal is the starting material that undergoes a series

More information

COPPER CYCLE EXPERIMENT 3

COPPER CYCLE EXPERIMENT 3 COPPER CYCLE EXPERIMENT 3 INTRODUCTION One simple way to state the aim of chemistry is: The study of matter and its transformations. In this experiment, a copper sample will appear in five different forms

More information

The following are the completed but unbalanced equations. Each equation is numbered to match each step of the cycle:

The following are the completed but unbalanced equations. Each equation is numbered to match each step of the cycle: REACTIONS OF COPPER Copper will undergo many types of reactions. In this experiment you will observe a sequence of copper reactions. The sequence begins with copper metal and ends with copper metal, so

More information

Copper Odyssey. Chemical Reactions of Copper

Copper Odyssey. Chemical Reactions of Copper Name Lab Partner(s) Copper Odyssey Chemical Reactions of Copper Date Period Elemental copper metal will be converted into copper (II) ion and then brought through a series of compound conversions until

More information

A Cycle of Copper Reactions

A Cycle of Copper Reactions EXPERIMENT A Cycle of Copper Reactions PURPOSE To demonstrate a series of copper reactions: starting with copper metal, oxidizing the metal to put it into solution and then, form a copper hydroxide, an

More information

Cu (s) Cu 2+ (aq) Cu(OH) 2 (s) CuO (s) Cu 2+ (aq) Cu (s)

Cu (s) Cu 2+ (aq) Cu(OH) 2 (s) CuO (s) Cu 2+ (aq) Cu (s) Cycle of Copper Reactions Lab Exercise The following is a protocol for the multi-step transformation of copper metal based upon the following chemical transformations: Cu (s) Cu 2+ (aq) Cu(OH) 2 (s) CuO

More information

CONSERVATION OF MATTER AND CHEMICAL PROPERTIES

CONSERVATION OF MATTER AND CHEMICAL PROPERTIES 1 CONSERVATION OF MATTER AND CHEMICAL PROPERTIES I. OBJECTIVES AND BACKGROUND The object of this experiment is to demonstrate the conservation of matter- or more particularly, the conservation of "atoms"

More information

To identify and classify various types of chemical reactions.

To identify and classify various types of chemical reactions. Cycle of Copper Reactions Minneapolis Community and Technical College v.11.17 Objectives: To observe and document copper s chemical changes in five different reactions and verify that copper is conserved

More information

EXPERIMENT 5 Chemistry 110 COMPOSITION OF A MIXTURE

EXPERIMENT 5 Chemistry 110 COMPOSITION OF A MIXTURE EXPERIMENT 5 Chemistry 110 PURPOSE: The purpose of this experiment is to determine the percent composition of a mixture. COMPOSITION OF A MIXTURE Most matter is a mixture of many substances. For example,

More information

PHYSICAL CHANGE OR CHEMICAL CHANGE?

PHYSICAL CHANGE OR CHEMICAL CHANGE? PHYSICAL CHANGE OR CHEMICAL CHANGE? STUDENT BOOK Chapter 2, page 58 LAB 24 OBSERVATION TOOLBOX Pages 18 19, 32, 39 40 Goal Distinguish between a physical change and a chemical change. Observation criteria

More information

The Synthesis of Copper Metal

The Synthesis of Copper Metal CHEM 109 Introduction to Chemistry Revision 1.0 The Synthesis of Copper Metal To learn about Oxidation-Reduction reactions. To learn about Half-Reactions and Half-Cells. To learn about the Activity of

More information

Partner: Cathy 22 March Separation and Qualitative Determination of Cations and Anions

Partner: Cathy 22 March Separation and Qualitative Determination of Cations and Anions Partner: Cathy 22 March 2012 Separation and Qualitative Determination of Cations and Anions Purpose: The purpose of this lab is to identify the cations and anions components in the unknown solution. This

More information

DOWNLOAD PDF CYCLE OF COPPER REACTIONS

DOWNLOAD PDF CYCLE OF COPPER REACTIONS Chapter 1 : Copperâ chlorine cycle - Wikipedia CYCLE OF COPPER REACTIONS. PURPOSE: The goal of the experiment is to observe a series of reactions involving copper that form a cycle and calculate the percent

More information

Experiment 3: Determination of an Empirical Formula

Experiment 3: Determination of an Empirical Formula Background Information The composition of a compound is defined by its chemical formula, which gives the number ratio of the different elements in the compound. For example, water has a fixed composition

More information

Zinc 17. Part 2 Practical work

Zinc 17. Part 2 Practical work Zinc 17 Part 2 Practical work 18 Zinc and Zirconia (per group) Teacher s notes Using carbon to extract copper from copper oxide could be used as an introduction to extracting less-reactive metals by displacement.

More information

H N 2. Decolorizing carbon O. O Acetanilide

H N 2. Decolorizing carbon O. O Acetanilide Experiment 1: Recrystallization of Acetanilide Reading Assignment Mohrig 2 4 (Glassware, Reagents, & Heating) & 14 15 (Melting Point & Recrystallization) The purification of organic compounds is a tedious,

More information

Activity of metals SCIENTIFIC. Demonstration and Inquiry. Introduction. Concepts. Background. Inquiry Approach. Demonstration Questions

Activity of metals SCIENTIFIC. Demonstration and Inquiry. Introduction. Concepts. Background. Inquiry Approach. Demonstration Questions Activity of Metals Demonstration and Inquiry SCIENTIFIC Introduction Chemical reactions are not formulas on a piece of paper they are dynamic and exciting events! The demonstration of aluminum with copper(ii)

More information

EXPERIMENT 7A. Chemical Separation by Filtration and Recrystallization INTRODUCTION

EXPERIMENT 7A. Chemical Separation by Filtration and Recrystallization INTRODUCTION EXPERIMENT 7A Chemical Separation by Filtration and Recrystallization INTRODUCTION The solubilities of solid substances in different kinds of liquid solvents vary widely. Substances that we call salts

More information

solvent diffusion dissolving soluble

solvent diffusion dissolving soluble What do we call it when a liquid changes into a solid? What do we call it when a liquid turns into a gas? What do we call it when a gas turns into a liquid? What do we call the solid that dissolves in

More information

CLASSI ICATION OF MAT R AND HOMOGENEOUS AND HETEROGENEOUS MIXTURES

CLASSI ICATION OF MAT R AND HOMOGENEOUS AND HETEROGENEOUS MIXTURES Experiment 3 Name: CLASSI ICATION OF MAT R AND HOMOGENEOUS AND HETEROGENEOUS MIXTURES Classification of Matter A pure substance is matter with definite and constant composition with distinct chemical properties.

More information

CHM Gravimetric Chloride Experiment (r7) 1/5

CHM Gravimetric Chloride Experiment (r7) 1/5 CHM 111 - Gravimetric Chloride Experiment (r7) 1/5 Purpose You will perform one of the basic types of quantitative analysis - the gravimetric analysis. You will be asked to determine the percentage of

More information

8.3 Preparation of Salts

8.3 Preparation of Salts For more awesome GSE and level resources, visit us at www.savemyexams.co.uk/ 8. Preparation of Salts Question Paper Level IGSE Subject hemistry (060) Exam oard ambridge International Examinations (IE)

More information

PRECAUTIONS WHILE PERFORMING CHEMISTRY ACTIVITIES. Do not touch anything without the permission of the teacherin the lab.

PRECAUTIONS WHILE PERFORMING CHEMISTRY ACTIVITIES. Do not touch anything without the permission of the teacherin the lab. PRECAUTIONS WHILE PERFORMING CHEMISTRY ACTIVITIES Do not touch anything without the permission of the teacherin the lab. 1. Do not use conc. Acids as they are harmful. 2. Handle glass material with care.

More information

PREPARATION & ANALYSIS OF AN IRON COORDINATION COMPOUND PART A: PREPARATION OF AN IRON COORDINATION COMPOUND

PREPARATION & ANALYSIS OF AN IRON COORDINATION COMPOUND PART A: PREPARATION OF AN IRON COORDINATION COMPOUND Chemistry 112 PREPARATION & ANALYSIS OF AN IRON COORDINATION COMPOUND PART A: PREPARATION OF AN IRON COORDINATION COMPOUND A. INTRODUCTION In this experiment you will synthesize the iron coordination compound,

More information

TITANIUM DIOXIDE. SYNONYMS Titania; CI Pigment white 6; CI (1975) No ; INS No. 171 DEFINITION DESCRIPTION FUNCTIONAL USES CHARACTERISTICS

TITANIUM DIOXIDE. SYNONYMS Titania; CI Pigment white 6; CI (1975) No ; INS No. 171 DEFINITION DESCRIPTION FUNCTIONAL USES CHARACTERISTICS TITANIUM DIOXIDE Prepared at the 71 st JECFA (2009) and published in FAO JECFA Monographs 7 (2009), superseding specifications prepared at the 67 th JECFA (2006) and published in FAO JECFA Monographs 3

More information

AQA Chemistry A-level

AQA Chemistry A-level AQA Chemistry A-level Required Practical 10 Preparation of a pure organic solid, test of its purity, and preparation of a pure organic liquid Reflux Reflux: continuous boiling and condensing of a reaction

More information

UNKNOWN UNKNOWNS Requirements: classify your functional group

UNKNOWN UNKNOWNS Requirements: classify your functional group UNKNOWN UNKNOWNS Candidates: ALCOHOLS Table 70.2, p. 766, 767 CARBOXYLIC ACIDS Table 70.1, p 764,765 ALDEHYDES Table 70.3, p. 767, 768 AMINES Table 70.5, p. 769, 770 KETONES Tabl e 70.14, p. 776 Requirements:

More information

Recrystallization with a Single Solvent

Recrystallization with a Single Solvent Experiment: Recrystallization Part II: Purification of Solids In Part I of the recrystallization experiment, you learned about the factors which make a good recrystallization solvent, and you learned how

More information

Lab 4: Recrystallization

Lab 4: Recrystallization Lab 4: Recrystallization Objectives: - Purify an impure sample of an antibiotic. - Practice the crystallization technique. Introduction: The purpose of this experiment is to introduce the technique of

More information

Gravimetric Analysis: Determination of % Sulfur in Fertilizer

Gravimetric Analysis: Determination of % Sulfur in Fertilizer Gravimetric Analysis: Determination % Sulfur in Fertilizer This is another "real world" sample experiment in this case we will analyze a fertilizer sample for the sulfate content and express the result

More information

1001 Nitration of toluene to 4-nitrotoluene, 2-nitrotoluene and 2,4-dinitrotoluene

1001 Nitration of toluene to 4-nitrotoluene, 2-nitrotoluene and 2,4-dinitrotoluene 1001 Nitration of toluene to 4-nitrotoluene, 2-nitrotoluene and 2,4-dinitrotoluene CH 3 CH 3 CH 3 NO 2 CH 3 NO 2 HNO 3 /H 2 SO 4 + + + side products NO 2 NO 2 C 7 H 8 (92.1) HNO 3 (63.0) H 2 SO 4 (98.1)

More information

Experimental technique. Revision 1. Electroplating an iron key with copper metal

Experimental technique. Revision 1. Electroplating an iron key with copper metal Experimental technique. Revision 1 Electroplating an iron key with copper metal Aim To investigate whether Faraday s laws apply to the electroplating of a brass key with nickel Procedure The apparatus

More information

CH 112 Special Assignment #4 Chemistry to Dye for: Part A

CH 112 Special Assignment #4 Chemistry to Dye for: Part A CH 112 Special Assignment #4 Chemistry to Dye for: Part A PRE-LAB ASSIGNMENT: Make sure that you read this handout and bring the essentials to lab with you. Here are the pre-lab questions for this week.

More information

Chapter 8. Gravimetric Analysis

Chapter 8. Gravimetric Analysis Chapter 8 Gravimetric Analysis Gravimetric analysis is the use of weighing to determine the amount of a component in your sample. Gravimetric analysis, or gravimetry is normally performed either as a :

More information

Archer G11 Partner: Judy Aug Gravimetric Analysis of a Metal Carbonate

Archer G11 Partner: Judy Aug Gravimetric Analysis of a Metal Carbonate Gravimetric Analysis of a Metal Carbonate Purpose The purpose of this lab is to identify the unknown carbonate. This can be done by finding the mass of the product carbonate and using stoichiometry on

More information

John Congleton. Multistep Synthesis of Benzilic Acid:

John Congleton. Multistep Synthesis of Benzilic Acid: 1 Multistep Synthesis of Benzilic Acid: Introduction Synthetic organic chemist often use the product of one reaction as the reactant in subsequent reaction (multistep synthesis). This situation occurs

More information

Experiment 2: Preparation of the Artificial Sweetener Dulcin

Experiment 2: Preparation of the Artificial Sweetener Dulcin Experiment 2: Preparation of the Artificial Sweetener Dulcin Organic compounds known as sugars are carbohydrates that occur widely in nature. For example, sucrose (aka table sugar) is found in sugar can,

More information

DETERMINATION of the EMPIRICAL FORMULA

DETERMINATION of the EMPIRICAL FORMULA DETERMINATION of the EMPIRICAL FORMULA One of the fundamental statements of the atomic theory is that elements combine in simple whole number ratios. This observation gives support to the theory of atoms,

More information

Chemical reactions and electrolysis

Chemical reactions and electrolysis Chemical reactions and electrolysis Higher Revision Questions Name: Class: Date: Time: 95 minutes Marks: 95 marks Comments: Page of 29 (a) Magnesium metal is shaped to make magnesium ribbon. Explain why

More information

Year 8 Reaction and Magnets HW Questions

Year 8 Reaction and Magnets HW Questions Year 8 Reaction and Magnets HW Questions 31 minutes 44 marks Page 1 of 14 Q1. Different elements have a wide variety of properties. The list gives some of them. brittle good electrical conductor good thermal

More information

Around Conservation of Matter

Around Conservation of Matter Printed Page 32 [Notes/Highlighting] LESSON 8 What Goes Around Comes Around Conservation of Matter Think About It The element copper can be mixed with other substances to make a colorful assortment of

More information

19. The preparation and purification of methyl-3-nitrobenzoate Student Sheet

19. The preparation and purification of methyl-3-nitrobenzoate Student Sheet 19. The preparation and purification of methyl-3-nitrobenzoate Student Sheet In this experiment you will learn or develop skills in preparative organic chemistry by making and purifying a sample of an

More information

Lab 4: Recrystallization

Lab 4: Recrystallization Lab 4: Recrystallization Pre Lab Question: (Answer submitted in a separate piece of paper at the beginning of lab) 1. Calculate how much 95% ethanol will be required to dissolve 0.8 g of sulfanilamide

More information

University-level STEM Experiment: Recycling Cans to Alum The Ohio State University ENG Spring 2015 Taylor Ourada, Mary Scherer, Ramon

University-level STEM Experiment: Recycling Cans to Alum The Ohio State University ENG Spring 2015 Taylor Ourada, Mary Scherer, Ramon University-level STEM Experiment: Recycling Cans to Alum The Ohio State University ENG 5797.14 Spring 2015 Taylor Ourada, Mary Scherer, Ramon Weldemicael Table of Contents I. Introduction... 1 II. Learning

More information

1. Which of the following elements has the highest percentage by mass in nature? A. Oxygen B. Aluminium C. Nitrogen D. Silicon

1. Which of the following elements has the highest percentage by mass in nature? A. Oxygen B. Aluminium C. Nitrogen D. Silicon Class: F.3 ( ) Baptist Lui Ming Choi Secondary School First Term Examination (2013-2014) Date: 6 / 12 / 2013 Name: Form 3 Chemistry Time: 10:20-11:05 a.m. Answer ALL the questions. For Section A, choose

More information

--> Buy True-PDF --> Auto-delivered in 0~10 minutes. GB/T Translated English of Chinese Standard: GB/T223.

--> Buy True-PDF --> Auto-delivered in 0~10 minutes. GB/T Translated English of Chinese Standard: GB/T223. Translated English of Chinese Standard: GB/T223.18-1994 www.chinesestandard.net Sales@ChineseStandard.net UDC 669.14/.15:543.062:546.56 NATIONAL STANDARD OF THE PEOPLE S REPUBLIC OF CHINA GB H 11 Replacing

More information

SCHOOL CHEMICALS FROM SCRAP COKE COLA CANS AND CALCIUM CARBIDE-WATER REACTION RESIDUE

SCHOOL CHEMICALS FROM SCRAP COKE COLA CANS AND CALCIUM CARBIDE-WATER REACTION RESIDUE SCHOOL CHEMICALS FROM SCRAP COKE COLA CANS AND CALCIUM CARBIDE-WATER REACTION RESIDUE By RCE PORT HARCOURT ERONDU, CHINONSO NGOZI (YOUTH COORDINATOR) RCE PORT HARCOURT, NIGERIA PRESENTED AT THE 7TH AFRICAN

More information

Extracting a metal from its ore 2004 by David A. Katz. All rights reserved.

Extracting a metal from its ore 2004 by David A. Katz. All rights reserved. Extracting a metal from its ore 2004 by David A. Katz. All rights reserved. Minerals are solid elements or compounds found naturally in the Earth's crust. Those minerals that contain sufficient metal to

More information

Dry matter content and fibre content

Dry matter content and fibre content Revised 1996 Black liquor Dry matter content and fibre content 0 Introduction This SCAN-test Standard replaces SCAN-N 22:77 from which it differs in that it also provides a procedure for the determination

More information

OXIDATION-REDUCTION TITRATIONS-Permanganometry

OXIDATION-REDUCTION TITRATIONS-Permanganometry Experiment No. Date OXIDATION-REDUCTION TITRATIONS-Permanganometry INTRODUCTION Potassium permanganate, KMnO, is probably the most widely used of all volumetric oxidizing agents. It is a powerful oxidant

More information

SurTec 717 Alkaline Zinc/Nickel Electroplating Process (Electrolyte based on Sodium)

SurTec 717 Alkaline Zinc/Nickel Electroplating Process (Electrolyte based on Sodium) SurTec 717 Alkaline Zinc/Nickel Electroplating Process (Electrolyte based on Sodium) Properties tolerates higher temperatures superior metal distribution produces Zn/Ni alloy deposits containing 12-15

More information

28. Some reactions of alcohols Student Sheet

28. Some reactions of alcohols Student Sheet 28. Some reactions of alcohols Student Sheet In these experiments you will be introduced to some of the reactions of the alcohol functional group. Intended lesson outcomes By the end of this practical

More information

Nickel Electroplating

Nickel Electroplating Nickel Electroplating In a galvanic or voltaic electrochemical cell, the spontaneous reaction occurs and electrons flow from the anode (oxidation) to the cathode (reduction). In an electrolytic cell, a

More information

Purification Of A Solid By Recrystallization AND Identification By Melting Point Determination

Purification Of A Solid By Recrystallization AND Identification By Melting Point Determination Purification Of A Solid By Recrystallization AND Identification By Melting Point Determination Refer back to your recrystallization and melting point experiments. In this experiment you must purify your

More information

EXPERIMENT 1. AIM: To prepare benzilic acid from benzyl using Green approach.

EXPERIMENT 1. AIM: To prepare benzilic acid from benzyl using Green approach. EXPERIMENT 1 AIM: To prepare benzilic acid from benzyl using Green approach. Requirements: 100 ml conical flask, 200ml beakers, filter paper, oven,0.5 g benzil,20% alc KH, dil.sulfuric acid, benzene for

More information

Copper Smelting by an Ancient Method

Copper Smelting by an Ancient Method Copper Smelting by an Ancient Method EXPERIMENT ## Prepared by Paul C. Smithson, Berea College, based on Yee et al., 004 Using beads of a copper-containing mineral, students will produce beads of nearly

More information

TYPES OF CHEMICAL REACTIONS PART I INTRODUCTION

TYPES OF CHEMICAL REACTIONS PART I INTRODUCTION EXPERIMENT 10 (2 Weeks) Chemistry 100 Laboratory TYPES OF CHEMICAL REACTIONS PART I INTRODUCTION It is useful to classify reactions into different types, because products of reactions can be predicted.

More information

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *7279389372* CHEMISTRY 06/06 Paper 6 Alternative to Practical October/November 07 1 hour Candidates

More information

Lab #4 Gravimetric Analysis of a Metal Carbonate (adapted from Flinn Scientific ChemFax, 2005)

Lab #4 Gravimetric Analysis of a Metal Carbonate (adapted from Flinn Scientific ChemFax, 2005) Ms. Sonderleiter AP Chemistry Name: Date: Lab #4 Gravimetric Analysis of a Metal Carbonate (adapted from Flinn Scientific ChemFax, 2005) Background: In this experiment, an unknown alkali metal carbonate,

More information

EXPERIMENT III. Determination of Iron in Iron Oxide, (Fe 2 O 3 ), Using Dichromate Method. Chemical Overview

EXPERIMENT III. Determination of Iron in Iron Oxide, (Fe 2 O 3 ), Using Dichromate Method. Chemical Overview EXPERIMENT III Determination of Iron in Iron Oxide, (Fe 2 O 3 ), Using Dichromate Method Chemical Overview This is a direct titration using K 2 Cr 2 O 7, a primary standard, as the titrant. As such the

More information

Duncan. UNIT 8 - Chemical Equations BALANCING EQUATIONS PRACTICE WORKSHEET 14.) C2H6 + O2 CO2 + H2O. 2.) Na + I2 NaI 3.) N2 + O2 N2O 4.

Duncan. UNIT 8 - Chemical Equations BALANCING EQUATIONS PRACTICE WORKSHEET 14.) C2H6 + O2 CO2 + H2O. 2.) Na + I2 NaI 3.) N2 + O2 N2O 4. BALANCING EQUATIONS PRACTICE WORKSHEET 1.) CH4 + O2 CO2 + H2O 2.) Na + I2 NaI 3.) N2 + O2 N2O 4.) N2 + H2 NH3 5.) KI + Cl2 KCl + I2 6.) HCl + Ca(OH)2 CaCl2 + H2O 7.) KClO3 KCl + O2 8.) K3PO4 + HCl KCl

More information

Chemical Reactions LAB

Chemical Reactions LAB Reaction Lab Reactions LAB You will go around from station to station and follow the instructions for each station on the hand out here. We will be in groups of 3 or 4 (NO MORE THAN 4 please!!!!!!!) You

More information

GraspIT AQA GCSE Chemical changes

GraspIT AQA GCSE Chemical changes A. Reactivity of metals The reactivity series, metal oxides and extractions 1. Three metals, X, Y and Z were put into water. The reactions are shown below: a) Use the diagrams to put metals X, Y and Z

More information

Chapter 25 Separating Mixtures

Chapter 25 Separating Mixtures Chapter 25 Separating Mixtures A solution is formed when a solid dissolves in a liquid The solid is referred to as the solute. The liquid is referred to as the solvent. A dilute solution is one where there

More information

INDIAN SCHOOL MUSCAT SENIOR SECTION DEPARTMENT OF CHEMISTRY CLASS X- PRACTICAL WORKSHEET

INDIAN SCHOOL MUSCAT SENIOR SECTION DEPARTMENT OF CHEMISTRY CLASS X- PRACTICAL WORKSHEET INDIAN SCHOOL MUSCAT SENIOR SECTION DEPARTMENT OF CHEMISTRY CLASS X- PRACTICAL WORKSHEET Different types of chemical reactions Experiment No: 1(a) Combination reaction Objectives: To study the Combination

More information

MINISTRY OF EDUCATION AND HUMAN RESOURCES, TERTIARY EDUCATION AND SCIENTIFIC RESEARCH MAURITIUS EXAMINATIONS SYNDICATE. CHEMISTRY OCTOBER hour

MINISTRY OF EDUCATION AND HUMAN RESOURCES, TERTIARY EDUCATION AND SCIENTIFIC RESEARCH MAURITIUS EXAMINATIONS SYNDICATE. CHEMISTRY OCTOBER hour MINISTRY OF EDUCATION AND HUMAN RESOURCES, TERTIARY EDUCATION AND SCIENTIFIC RESEARCH MAURITIUS EXAMINATIONS SYNDICATE CANDIDATE NAME SCHOOL NAME CLASS/SECTION NATIONAL ASSESSMENT AT FORM III CHEMISTRY

More information

Compiled by Rahul Arora What do you mean by corrosion? How can you prevent it?

Compiled by Rahul Arora What do you mean by corrosion? How can you prevent it? Rahul Arora 12. What do you mean by corrosion? How can you prevent it? 13. MnO2 + 4HCl MnCl2 + 2H2O + Cl2 In the above equation, name the compound which is oxidized and which is reduced? 14. Match the

More information

SurTec 717 R Alkaline Zinc/Nickel Process

SurTec 717 R Alkaline Zinc/Nickel Process Protection upgraded SurTec 717 R Alkaline Zinc/Nickel Process Properties optimized for rack plating tolerates higher temperatures with high burning limit achieves superior metal distribution produces uniform

More information

Chem2211L. Lab Report. Recrystallization

Chem2211L. Lab Report. Recrystallization Chem2211L Lab Report Recrystallization September 27, 2016 Experiment #3: Recrystallization Experiment Date: September 20, 2016 Lab Partners: Judienne Archer Tonja Bryant Alexis Dunn Objective: To separate

More information

» Talc is a native, hydrous magnesium silicate, sometimes containing a small proportion of aluminum silicate.

» Talc is a native, hydrous magnesium silicate, sometimes containing a small proportion of aluminum silicate. Change to read: Talc» Talc is a native, hydrous magnesium silicate, sometimes containing a small proportion of aluminum silicate. Packaging and storage Preserve in well closed containers. Identification

More information

WET ANALYSIS OF GOLD-SILVER ALLOYS OF HIGH GOLD CONTENT 1

WET ANALYSIS OF GOLD-SILVER ALLOYS OF HIGH GOLD CONTENT 1 WET ANALYSIS OF GOLD-SILVER ALLOYS OF HIGH GOLD CONTENT EARLE R. CALEY AND LOWELL W. SHANK Department of Chemistry, The Ohio State University, Columbus, Ohio ABSTRACT -silver alloys dissolve completely

More information

Changes for Organic Chemistry 2521 Labs

Changes for Organic Chemistry 2521 Labs Changes for Organic Chemistry 2521 Labs Chapter 3 Crystallization Part 1 (Starts on page 56) Test the solubility of three compounds with three solvents. There are four compounds to choose from: 1. Resorcinol

More information

Downloaded From: Aim. To prepare a sample of cuprammonium rayon threads from filter paper.

Downloaded From:  Aim. To prepare a sample of cuprammonium rayon threads from filter paper. Aim To prepare a sample of cuprammonium rayon threads from filter paper. Apparatus Required a) Conical flask (preferably 250 ml) b) Funnel c) Glass rod d) Beaker (preferably 250 ml) e) Water bath f) Filter

More information

TECHNICAL GRADE MOLYBDENUM OXIDE

TECHNICAL GRADE MOLYBDENUM OXIDE Procedure for the Assaying of TECHNICAL GRADE MOLYBDENUM OXIDE GUIDELINES FROM R INTRODUCTION This Guideline on good practice in relation to the Assaying of Molybdenite Concentrates is one of a six part

More information

Water. Question Paper 1. Chemistry (0620/0971) Cambridge International Examinations (CIE) Topic. Air and Water Sub-Topic. Water.

Water. Question Paper 1. Chemistry (0620/0971) Cambridge International Examinations (CIE) Topic. Air and Water Sub-Topic. Water. For more awesome resources, visit us at www.savemyexams.co.uk/ Water Question Paper Level IGSE Subject hemistry (060/097) Exam oard ambridge International Examinations (IE) Topic ir and Water Sub-Topic

More information

GCSE MARKING SCHEME SUMMER 2016 SCIENCE - CHEMISTRY C1 4462/01/02. WJEC CBAC Ltd.

GCSE MARKING SCHEME SUMMER 2016 SCIENCE - CHEMISTRY C1 4462/01/02. WJEC CBAC Ltd. GCSE MARKING SCHEME SUMMER 2016 SCIENCE - CHEMISTRY C1 4462/01/02 INTRODUCTION This marking scheme was used by WJEC for the 2016 examination. It was finalised after detailed discussion at examiners' conferences

More information

T 619 cm-84 TENTATIVE STANDARD 1933 OFFICIAL STANDARD 1935 CORRECTED 1944 CORRECTED 1953 CLASSICAL METHOD TAPPI. Analysis of salt cake

T 619 cm-84 TENTATIVE STANDARD 1933 OFFICIAL STANDARD 1935 CORRECTED 1944 CORRECTED 1953 CLASSICAL METHOD TAPPI. Analysis of salt cake T 619 cm-8 TENTATIVE STANDARD 19 OFFICIAL STANDARD 195 CORRECTED 19 CORRECTED 195 CLASSICAL METHOD 198 198 TAPPI The information and data contained in this document were prepared by a technical committee

More information

The Haberdashers' Aske's Boys School Elstree, Herts. 13+ Entrance Examination 2015

The Haberdashers' Aske's Boys School Elstree, Herts. 13+ Entrance Examination 2015 The Haberdashers' Aske's Boys School Elstree, Herts 13+ Entrance Examination 2015 CHEMISTRY Please follow these instructions The Science paper is divided into three sections (Biology, Chemistry and Physics).

More information

UW Department of Chemistry Lab Lectures Online

UW Department of Chemistry Lab Lectures Online Lab 2: Chemical Composition of Compounds Part I. Identification Based on Percent Metal Compositions Part II. Determination of Percent KClO 3 in a KCl/KClO 3 Mixture Procedure Overview Inspect and clean

More information

An Oxidation-Reduction Titration: The Reaction of Fe 2+ and Ce 4+

An Oxidation-Reduction Titration: The Reaction of Fe 2+ and Ce 4+ An Oxidation-Reduction Titration: The Reaction of Fe 2+ and Ce 4+ LAB ADV COMP 8 From Advanced Chemistry with Vernier, Vernier Software & Technology, 2004 INTRODUCTION A titration, as you recall, is a

More information

Oxidation and Reduction

Oxidation and Reduction Oxidation and Reduction An oxidation reaction is one in which oxygen is added to a substance. Example: Methane is oxidised when it burns in air. Oxygen is added to the carbon in methane, forming carbon

More information

Elements, Compounds, Mixtures

Elements, Compounds, Mixtures Elements, compounds, Mixtures Mark Scheme 2 Level IGCSE(9-) Subject Chemistry Exam Board Edexcel IGCSE Module Double Award (Paper C) Topic Principles of Chemistry Sub-Topic Elements, Compounds, Mixtures

More information

What is: (a) aqua fortis, (b) aqua regia (c) Fixation of Nitrogen?

What is: (a) aqua fortis, (b) aqua regia (c) Fixation of Nitrogen? EXERCISE.1 Question 1: What is: (a) aqua fortis, (b) aqua regia (c) Fixation of Nitrogen? Solution 1: Book Name: Selina concise (a) Aqua fortis: Nitric acid is called aqua fortis. Aqua fortis means strong

More information

GRAVIMETRIC DETERMINATION OF SULFATE IN AN UNKNOWN SOLUTION

GRAVIMETRIC DETERMINATION OF SULFATE IN AN UNKNOWN SOLUTION GRAVIMETRIC DETERMINATION OF SULFATE IN AN UNKNOWN SOLUTION AIM The main objective of this experiment is to determine the concentration of sulfate ion in an unknown solution by using gravimetry. INTRODUCTION

More information

Solution 2: Class X Chapter-4 Analytical Chemistry Chemistry. Book Name: Selina Concise EXERCISE- 1 (A)

Solution 2: Class X Chapter-4 Analytical Chemistry Chemistry. Book Name: Selina Concise EXERCISE- 1 (A) EXERCISE- 1 (A) Book Name: Selina Concise Question 1: Write the probable colour of the following salts. (a) Ferrous salts (b) Ammonium salts (c) Cupric salts (d) Calcium salts (e) Aluminium Salts Solution

More information

30th International Chemistry Olympiad

30th International Chemistry Olympiad 30th International Chemistry Olympiad Melbourne, Tuesday July 7, 1998 Laboratory Examination Exercises Official Version Attention! At all times while you are in the laboratory you must wear safety eye

More information

Year 7 Chemistry HW Questions

Year 7 Chemistry HW Questions Year 7 Chemistry HW Questions 37 minutes 56 marks Page 1 of 15 Q1. Molly used a ph sensor to test different liquids. She dipped the probe of the sensor into each liquid and recorded the ph value in a table.

More information

SurTec 712 Alkaline Cyanide-Free Zinc/Iron Process

SurTec 712 Alkaline Cyanide-Free Zinc/Iron Process Protection upgraded SurTec 712 Alkaline Cyanide-Free Zinc/Iron Process (Electrolyte based on Potassium) Properties for rack and barrel plating, with excellent metal distribution good covering and throwing

More information

SIDE DISPLAY: Liesegang Reactions (revised)

SIDE DISPLAY: Liesegang Reactions (revised) Discussion The operating guide for Liesegang Rings is organized slightly differently than other operating guides. This is because there are recipes here for 5 different reactions. It is recommended that

More information

CHM 152 Last Updated Jan Lab 3: Freezing-Point Depression

CHM 152 Last Updated Jan Lab 3: Freezing-Point Depression temperature, C CHM 152 Last Updated Jan. 2013 Lab 3: Freezing-Point Depression Introduction This lab will examine the effect a solute has on a liquid s freezing point and show how freezing-point depression

More information

Experiment 3 * Thermochromism in the Ionic Conductor, Cu 2 HgI 4

Experiment 3 * Thermochromism in the Ionic Conductor, Cu 2 HgI 4 Experiment 3 * Thermochromism in the Ionic Conductor, Cu 2 HgI 4 *This lab taken from Teaching General Chemistry; A Materials Science Companion, Eds. Ellis, A.B.; Geselbracht, M.J.; Johnson, B.J.; Lisensky,

More information

Cambridge International Examinations Cambridge International General Certificate of Secondary Education

Cambridge International Examinations Cambridge International General Certificate of Secondary Education Cambridge International Examinations Cambridge International General Certificate of Secondary Education CHEMISTRY 06/63 Paper 6 Alternative to Practical May/June 16 1 hour Candidates answer on the Question

More information

IRON (Colorimetric) 2. Muffle Furnace: Equipped with pyrometer and capable of operating at controlled temperatures up to 600 C

IRON (Colorimetric) 2. Muffle Furnace: Equipped with pyrometer and capable of operating at controlled temperatures up to 600 C IRONX.01-1 IRON (Colorimetric) PRINCIPLE SCOPE Organic matter in the sample is destroyed by ignition in the presence of a small amount of sulfuric acid. Iron in the residue is reduced to iron (II) and

More information

Cu-AgNO 3 Lab Date: Hour: Question: What is the mole ratio of copper consumed to silver produced in the reaction?

Cu-AgNO 3 Lab Date: Hour: Question: What is the mole ratio of copper consumed to silver produced in the reaction? Chemistry Cu-ANO 3 Lab Name: Date: Hour: Partner: Question: What is the mole ratio of copper consumed to silver produced in the reaction? Hypothesis: (answer usin complete sentences) Research (answer questions

More information

Industrial Question paper 2

Industrial Question paper 2 Level Subject Exam Board Industrial Question paper 2 IGCSE(9-1) Chemistry Edexcel IGCSE Module Single Award (Paper 2C) Topic Sub-Topic Industrial Booklet Question paper 2 Time Allowed: 21 minutes Score:

More information

2. Crystallization. A. Background

2. Crystallization. A. Background 2. Crystallization A. Background Crystallization is one of several available techniques available to purify organic compounds. Unlike other techniques, however, crystallization is specific to the purification

More information

EXPERIMENT 9 DEHYDRATION OF 2-METHYLCYCLOHEXANOL CH 3 H CH 3 OH H 3 PO 4 +

EXPERIMENT 9 DEHYDRATION OF 2-METHYLCYCLOHEXANOL CH 3 H CH 3 OH H 3 PO 4 + EXPERIMENT 9 DEHYDRATION OF 2-METHYLCYCLOHEXANOL CH 3 CH 3 H CH 3 OH H 3 PO 4 + + H 2 O In this experiment, a microscale distillation apparatus will be used to perform an acid-catalyzed dehydration reaction

More information

Electrochemistry LEC Electrogravimetric determination of copper. What you need: What you can learn about. Principle and tasks

Electrochemistry LEC Electrogravimetric determination of copper. What you need: What you can learn about. Principle and tasks Electrochemistry LEC 06 What you can learn about Quantitative analysis Electrolysis Gravimetry Overpotential and electrode polarisation Principle and tasks Electrogravimetry is an important analytical

More information

Analysis of Calcium Carbonate Tablets

Analysis of Calcium Carbonate Tablets Experiment 9 Analysis of Calcium Carbonate Tablets Prepared by Ross S. Nord, Eastern Michigan University PURPOSE To perform a gravimetric exercise to determine weight percent of active ingredient in a

More information

The final oxidation product, iron (III), then combines with oxygen and water to form iron (III) oxide, or "rust".

The final oxidation product, iron (III), then combines with oxygen and water to form iron (III) oxide, or rust. EXPERIMENT 19 Corrosion and Electrolytic Cells CORROSION OF IRON Corrosion is a naturally occurring redox process that oxidizes metals to their oxides and/or sulfides. In Part A we will be focusing primarily

More information