Lab #4 Gravimetric Analysis of a Metal Carbonate (adapted from Flinn Scientific ChemFax, 2005)
|
|
|
- Felix Briggs
- 5 years ago
- Views:
Transcription
1 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, M 2 CO 3, is analyzed to determine the identity of the metal. A known amount of the soluble unknown carbonate is dissolved in water to dissociate the compound into ions (Equation 1). M 2 CO 3 (s) 2M + (aq) + CO 3 2- (aq) Equation 1 When a solution of calcium chloride, CaCl 2, is added to this metal carbonate solution, a precipitate of calcium carbonate forms (Equation 2). Ca 2+ (aq) + CO 3 2- (aq) CaCO 3 (s) Equation 2 The overall reaction represents a double-displacement reaction with a precipitate formed (Equation 3). CaCl 2 (aq) + M 2 CO 3 (aq) CaCO 3 (s) + 2MCl(aq) Equation 3 The precipitated calcium carbonate is then filtered, dried, and weighed. The molar mass of the alkali metal carbonate can be determined using stoichiometry. Purpose: To determine the identity of an alkali metal carbonate using gravimetric analysis of a double-displacement precipitation reaction. Materials: Unknown metal carbonate Calcium chloride solution, 0.2 M Distilled water Ring stand Filter funnel Stirring rods Bunsen burner Crucible Electronic balance Beakers, 400-mL Drying oven Filter paper Clay triangle Tongs Watch glass
2 Procedure: Dehydrating the Alkali Metal Carbonate 1. Prepare the crucible by heating for approximately 1 minute, allowing it to cool, and finding its mass. 2. Add approximately 2 g of the unknown carbonate to the crucible and find the combined mass of the crucible and carbonate. 3. Heat the crucible and carbonate form 2-3 minutes. Cool and mass. 4. Repeat step 3. Conducting the Precipitation Reaction 5. Add the crucible contents to a 400-mL beaker. 6. Add about 125 ml of 0.2 M CaCl 2 and stir. Let the precipitate settle (5 min). 7. Filter out the precipitate using a piece of massed filter paper. 8. Place the filter paper on a watch glass and place in a drying oven for minutes. 9. Remove and find the mass of the sample. 10. Break up the solid and return to the drying oven for 5 minutes. 11. Find the mass of the sample. Data/Observations: Mass of crucible Value Mass (g) Mass of crucible + M 2 CO 3 Mass of crucible + M 2 CO 3 (dried) Mass of crucible + M 2 CO 3 (dried 2 nd time) Mass of filter paper Mass of filter paper + CaCO 3 (1 st time) Mass of filter paper + CaCO 3 (2 nd time) Observations:
3 Calculations: 1. Determine the mass of the hydrous alkali metal carbonate. 2. Determine the mass of the anhydrous alkali metal carbonate. 3. Determine the mass of the final dried calcium carbonate product. 4. Using the mass of dried calcium carbonate, determine the number of moles of alkali metal carbonate present in the original sample. 5. Using the moles of alkali metal carbonate present and the mass of the alkali metal carbonate, determine the molar mass of the sample. 6. Using your value for #5 and the actual value, determine your percent error.
4 Conclusion Questions: 1. Why is the alkali metal carbonate heated before it was reacted with the calcium chloride solution? 2. Why is calcium chloride solution used instead of a solution of potassium chloride? 3. Why is the calcium carbonate removed from the oven after minutes of heating, crushed, and then returned to the drying oven? 4. Based on the calculation above, what is the identity of the unknown alkali metal carbonate? Why? 5. What are some potential sources of error in this experiment? Explain.
5 6. How could you improve this experimental procedure to reduce the likelihood of error? Explain. 7. If you accidentally spilled some of the alkali metal carbonate before mixing it with the calcium chloride solution, how would the calculated value of molar mass be affected? Explain. 8. If tap water were used in place of distilled to dissolve the dried alkali metal carbonate, how would the value of molar mass be affected? Explain.
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
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
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
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
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 :
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
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,
Experiment. Molar Mass of an Unknown Sulfate Salt by Gravimetric Techniques 1
Experiment. Molar Mass of an Unknown Sulfate Salt by Gravimetric Techniques 1 This lab is to reacquaint you with some basic laboratory techniques and serves as a warm-up to the experiments in this course.
Experiment 3, Hydrate Experiment Chemistry 201, Wright College, Department of Physical Science and Engineering
Name Date Experiment 3, Hydrate Experiment Chemistry 201, Wright College, Department of Physical Science and Engineering Hydrates are ionic compounds with water loosely bound in their solid, crystalline
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
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,
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
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,
Archer G11 Partner: Mi 6 Sept Analysis of Alum, AlK(SO 4 ) 2 *12H 2 O
Analysis of Alum, AlK(SO 4 ) 2 *12H 2 O Purpose: The purpose of this lab is to determine the melting point of alum and the number of water molecules that can be attached to one alum molecule. The significance
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
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
EMPIRICAL FORMULA OF MAGNESIUM OXIDE
EXPERIMENT 7 Chemistry 110 EMPIRICAL FORMULA OF MAGNESIUM OXIDE PURPOSE: The purpose of this experiment is to determine the empirical formula of a compound. I. INTRODUCTION The object of this experiment
EMPIRICAL FORMULA OF MAGNESIUM OXIDE
EXPERIMENT 7 Chemistry 110 EMPIRICAL FORMULA OF MAGNESIUM OXIDE PURPOSE: The purpose of this experiment is to determine the empirical formula of a compound. I. INTRODUCTION The object of this experiment
Porosity of Compost Water retention capacity of Compost Organic matter content of Compost Buffering capacity of Compost
Porosity of Compost Water retention capacity of Compost Organic matter content of Compost Buffering capacity of Compost by Page 1/21 Contents What is the effect of compost on soil properties?... 3 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.
EMP I RICAL FORMULA OF MAGNESI U M OXIDE
Experiment 6 Name: 53 EMP I RICAL FORMULA OF MAGNESI U M OXIDE In this experiment, you will synthesize oxide via the reaction pathways summarized in Figure 1. Note that [1] is the main reaction and [2]
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
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
Chapter six. Precipitate is separated by filtration, washing,drying and finally is accurately weighed.
Gravimetric Analysis Chapter six Gravimetric Analysis :- Is one of the most accurate and precise methods of quantative analysis.it is based on the measurements of the mass of solid product of a chemical
CHEM 1215 LAB NOTES EXPT #2: PHYSICAL AND CHEMICAL CHANGES 1
CHEM 1215 LAB NOTES EXPT #2: PHYSICAL AND CHEMICAL CHANGES 1 TECHNIQUES: chemical and physical changes, reactions, observations READING: PHYSICAL AND CHEMICAL CHANGES e.g. Tro chapter 1 SAFETY: Safety
Beaker. Beaker Tongs. Bunsen Burner 2/19/2019
Beaker Beakers hold solids or liquids that will not release gases when reacted or are unlikely to splatter if stirred or heated. 1 2 Beaker Tongs Bunsen Burner Beaker tongs are used to move beakers containing
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
COMBUSTION. A combustion reaction is the reaction of a substance with oxygen, usually with the rapid release of heat to produce a flame.
1 COMBUSTION Copyright: Department of Chemistry, University of Idaho, Moscow, ID 2010. A combustion reaction is the reaction of a substance with oxygen, usually with the rapid release of heat to produce
Periodic Trends and the Properties of Elements
Page 1 - The Alkaline Earth Metals Introduction The periodic table is the most recognized symbol of chemistry across the world. It is a valuable tool that allows scientists not only to classify the elements
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
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
Total Dissolved Solids
Total Dissolved Solids LabQuest 12 INTRODUCTION Solids are found in streams in two forms, suspended and dissolved. Suspended solids include silt, stirred-up bottom sediment, decaying plant matter, or sewage-treatment
Periodic Trends and the Properties of Elements The Alkaline Earth Metals
Introduction Periodic Trends and the Properties of Elements The Alkaline Earth Metals The periodic table is the most recognized symbol of chemistry across the world. It is a valuable tool that allows scientists
Evaluate long- range plans concerning resource use and by- product disposal for environmental, economic, and political impact
Title: Author: Course: A Fluid State Of Mind Amanda Brewer Brookland High School Brookland Physical Science, Chemistry Duration: Three 45 minute class periods Grade Level: 9-12 Objective: The process of
If you like us, please share us on social media. The latest UCD Hyperlibrary newsletter is now complete, check it out.
Sign In Forgot Password Register username username password password Sign In If you like us, please share us on social media. The latest UCD Hyperlibrary newsletter is now complete, check it out. ChemWiki
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
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
EXPERIMENT 3 THE SYNTHESIS OF COPPER SULFIDE
EXPERIMENT 3 THE SYNTHESIS OF COPPER SULFIDE When heated together, copper and sulfur combine to form a sulfide of copper. In this assignment, you will heat a known mass of copper with excess sulfur in
Chemistry 143 Empirical Formulas Dr. Caddell. Synthesis of Zinc Iodide and Magnesium Oxide
Synthesis of Zinc Iodide and Magnesium Oxide In this lab you will synthesize zinc iodide from zinc metal and solid iodine. You will also synthesize magnesium oxide from magnesium metal and oxygen. Equipment
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
Determination of the Empirical Formula of Magnesium Oxide
Determination of the Empirical Formula of Magnesium Oxide The quantitative stoichiometric relationships governing mass and amount will be studied using the combustion reaction of magnesium metal. Magnesium
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)
FORMULA OF A HYDRATE LAB
Chem 11 Unit 2: The Mole Name: FORMULA OF A HYDRATE LAB Introduction: Many salts that have been crystallized from a water solution appear to be dry, but when they are heated, large amounts of water are
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
Salinity in Seawater
Salinity in Seawater Objective To familiarize students with the different methods used for measuring salinity of water. Introduction: Salinity exerts profound impacts on the marine environment. It controls
Analysis of Alum, AlK(SO 4 ) 2 12H 2 O AP Chemistry Laboratory #2
Analysis of Alum, AlK(SO 4 ) 2 12H 2 O AP Chemistry Laboratory #2 Catalo No. AP6354 Publication No. 6354A Introduction When a compound is synthesized, tests are carried out to confirm whether the compound
The empirical formula of a compound
The empirical formula of a compound Reference: Chapter 1, Section 1.2, pages 21 24 Please note Aim A full risk assessment should be carried out prior to commencing this experiment. Personal safety equipment
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.
Preparation of copper(ii) sulfate from copper(ii) nitrate
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
Evaluation copy. Total Dissolved Solids. Computer INTRODUCTION
Total Dissolved Solids Computer 12 INTRODUCTION Solids are found in streams in two forms, suspended and dissolved. Suspended solids include silt, stirred-up bottom sediment, decaying plant matter, or sewage-treatment
Solubility Equilibrium
Solubility Equilibrium This is an X-ray of the large intestine. The patient was given a drink of barium sulfate to drink which is insoluble (does NOT dissolve) and gives the doctor a better image. Barium
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
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
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
Mon. Tues. Wed. Thurs. Fri. AM or PM B
Name: (cf. Honesty Declaration Statement on page 20) Laboratory Day (circle) Lab Room Locker Lab. Session (circle) Lab. Section Mon. Tues. Wed. Thurs. Fri. AM or PM B Date experiment is performed MARK:
Experimental Procedure. Lab 402
Experimental Procedure Lab 402 Procedure Overview Cyclohexane is the solvent selected for this experiment although other solvents may be just as effective for the determination of the molar mass of a solute.
London Examinations IGCSE
Centre No. Paper Reference Surname Initial(s) Candidate No. Signature Paper Reference(s) 4335/03 4437/08 London Examinations IGCSE Chemistry 4335 Paper 3 Science (Double Award) 4437 Paper 8 Foundation
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
to water. You add 1 drop of phenolphthalein and the solution turns pink. This observation tells you Na 2
1A End of Lab Questions Notes 9/11/18 Lab 4 1 You add 100 g of to water You add 1 drop of phenolphthalein and the solution turns pink This observation tells you is a base 2 You add vinegar (09 M acetic
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
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)
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
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
Assistant Lecturer. Sahar Mohammed Shakir Assistant Lecturer. Abdul Hafeedh Hameed Assistant Lecturer. Ali Basim
Assistant Lecturer Sahar Mohammed Shakir Assistant Lecturer Abdul Hafeedh Hameed Assistant Lecturer Ali Basim Solid organic cpd.s when isolated from organic reaction are impure; they are contaminated with
Pre-Lab 5: Magnesium and Magnesium Oxide
Name: Pre-Lab 5: Magnesium and Magnesium Oxide Section: Answer the following questions after reading the background information at the beginning of the lab. This should be completed before coming to lab.
AP*Chemistry Solubility Equilibria
AP*Chemistry Solubility Equilibria SOLUBILITY EQUILIBRIA (K sp, THE SOLUBILITY PRODUCT) Saturated solutions of salts are another type of chemical equilibria. Remember those solubility rules? The fine print
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
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.
Pre-Lab Exercises Lab 8: Biochemistry
Pre-Lab Exercises Lab 8: Biochemistry Name Date Section 1. List the 3 basic components of a DNA nucleotide, and draw a simple picture to show how they interact. 2. Consider the amine bases in DNA. List
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
Part A: Carbonic Acid and CO2 Equilibrium
Part A: Carbonic Acid and CO2 Equilibrium https://serc.carleton.edu/eslabs/carbon/7a.html Equilibrium 1: CO2 + H2O H2CO3 What are the physical states of CO2 on Earth, Mars and Venus? How can you shift
Lab #7: Redox Titration Lab Exercise Chemistry II 10 points Partner: USE BLUE/BLACK INK!!!! Date: Hour:
Lab #7: Redox Titration Lab Exercise Name: _ Chemistry II 10 points Partner: USE BLUE/BLACK INK!!!! Date: Hour: Goal: The goal of this lab is to determine the molarity of an oxalic acid solution by titrating
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
1. The equation that represents the equilibrium in a saturated solution of Fe 2 (SO 4 ) 3 is.. The precipitate which forms first is
CHEMISTRY 12 UNIT 3 - REVIEW Ksp Part A - Multiple Choice 1. The equation that represents the equilibrium in a saturated solution of Fe 2 (SO 4 ) 3 is A. Fe 2 (SO 4 ) 3 (s) 3 Fe 2+ (aq) + 2 SO 4 3 (aq)
Several complexes of Cu 2+, Ni 2+, and Co 2+ are formed and studied. The observations of color change that result from the addition of a ligand are
Overview Several complexes of Cu 2+, Ni 2+, and Co 2+ are formed and studied. The observations of color change that result from the addition of a ligand are used to understand the relative stability of
MAKING SOLID SOLUTIONS WITH ALKALI HALIDES (AND BREAKING THEM)
MAKING SOLID SOLUTIONS WITH ALKALI HALIDES (AND BREAKING THEM) John B. Brady Department of Geology Smith College Northampton, MA 01063 jbrady@science.smith.edu INTRODUCTION When two cations have the same
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.
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
CEL212 Environmental Engineering
Page 1 Indian Institute of Technology Delhi CEL212 Environmental Engineering Second Semester 2012-13 (Dr. Arun Kumar; arunku@civil.iitd.ac.in) Laboratory 7: Biochemical Oxygen Demand (BOD) and Chemical
Oxygen Formula: O 2 Bonding: covalent Appearance: colourless gas. Oxygen is one of the two main gases in our atmosphere, the other being nitrogen.
Composition of the air Air is a mixture of gases. The approximate amount if each gas in dry air is shown in the pie chart (right), but you should be aware that air also contains a variable amount of water
Forensics with TI-Nspire Technology
Forensics with TI-Nspire Technology 2013 Texas Instruments Incorporated 1 education.ti.com Science Objectives Identify characteristics of different soils to demonstrate that a suspect has been at a scene.
Revised Molar Mass Measurement Lab Purpose: Background:
Revised Molar Mass Measurement Lab (Based on prior Ch b experiment, incorporating revision suggestions from Tsze Tsang) Purpose: To use the colligative properties of cyclohexane solutions to determine
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
Lab 2: Determination of the empirical formula of the product of magnesium heating
Chemistry 140 Please have parts 1, 2, 3 and 4 (tables only) ready before class on Wednesday, October 11. Write an abstract and paper-clip it to the front of your individual writeup. The abstract and the
The Crystal Forest Favorite Holiday Demonstrations
The Crystal Forest Favorite Holiday Demonstrations SCIENTIFIC Introduction Put a new twist on crystal growing. In this class participation demonstration, students cut out and assemble miniature trees and
CHM111 Lab Redox Titration Grading Rubric
CHM111 Lab Redox Titration Grading Rubric Name Team Name Criteria Points possible Points earned Lab Performance Printed lab handout and rubric was brought to lab 3 Safety and proper waste disposal procedures
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
MAKING SOLID SOLUTIONS WITH ALKALI HALIDES (AND BREAKING THEM)
MAKING SOLID SOLUTIONS WITH ALKALI HALIDES (AND BREAKING THEM) John B. Brady Department of Geology Smith College Northampton, MA 01063 jbrady@science.smith.edu INTRODUCTION When two cations have the same
Experiment 1: The Densities of Liquids and Solids (from Masterson & Hurley)
Experiment 1: The Densities of Liquids and Solids (from Masterson & Hurley) One of the fundamental properties of any sample of matter is its density, which is its mass per unit of volume. The density of
Utilization of Calcium Carbonate (Clam Shell) Universities Research Journal 2013, Vol. 6
Title All Authors Publication Type Publisher (Journal name, issue no., page no etc.) Abstract Keywords Utilization of Calcium Carbonate (Clam Shell) Aye Aye Mar Local Publication Universities Research
Benzoic Acid Blizzard in a Bottle A Holiday Lab
Benzoic Acid Blizzard in a Bottle A Holiday Lab In this lab, you will learn about how some solutes that are only partly soluble can be forced to fully dissolve with heat. When a solute has dissolved as
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
Experiment #8. Redox Titration
Experiment #8. Redox Titration Goal To determine the mass of iron in supplement pill using redox titration. Introduction Oxidationreduction reactions (also known as redox reactions) are reactions that
Question Answer Notes Marks number 1 (a) (i) Any two from: 2 M1 calcium/solid/it disappears
Answer Notes Marks (a) (i) Any two from: M calcium/solid/it disappears ACCEPT dissolves / gets smaller IGNORE mass decreases M bubbles (of gas) / fizzing / effervescence ACCEPT gas given off IGNORE hydrogen
Measuring Manganese Concentration Using Spectrophotometry
Measuring Manganese Concentration Using Spectrophotometry Objectives To use spectroscopy to determine the amount of Manganese is an unknown sample. Scenario Your have just joined a "Green Team" at the
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
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
Chemistry 102 Freezing Point Depression Dr. Caddell. Depressing the Freezing Point of Cyclohexane
Depressing the Freezing Point of Cyclohexane In this lab you will determine the molar mass of an unknown molecular compound by determining the freezing point depression of a sample of cyclohexane. Equipment
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