Basic Chemistry Review For Chem.111

Transcription

1 Basic Chemistry Review For Chem.111 Reference Page Polyatomic Ions... 1 Simple Cations and Anions... 2 Names of Simple Ions... 3 Worksheets Nomenclature... 4 Equations Worksheet... 6 Basic Stoichometry Worksheet # Stoichometry Worksheet # Worksheet Answer Keys Nomenclature answer key Equations Worksheet answer key Basic Stoichometry Worksheet #1 answer key Stoichometry Worksheet #2 answer key... 18

2 POLYATOMIC IONS CATIONS NH 4 + ammonium ANIONS HSO 3 HSO 4 HCO 3 2 bisulfite/hydrogen sulfite SO 3 2 bisulfate/hydrogensulfate SO 4 2 S 2 O 3 2 bicarbonate/ CO 3 hydrogen carbonate sulfite sulfate thiosulfate carbonate HS bisulfide PO 3 3 phosphite H 2 PO 4 dihydrogen phosphate HPO 4 2 monohydrogen phosphate PO 4 3 phosphate CN cyanide AsO 4 3 arsenate SCN thiocyanate CrO 4 2 OCN cyanate Cr 2 O 7 2 chromate BO 3 3 dichromate borate NO 2 NO 3 ClO ClO 2 ClO 3 ClO 4 BrO BrO 2 BrO 3 BrO 4 IO IO 2 IO 3 MnO 4 OH C 2 H 3 O 2 nitrite nitrate hypochlorite chlorite chlorate perchlorate hypobromite bromite bromate perbromate hypoiodite iodite iodate permanganate hydroxide acetate PREFIXED AND SUFFIXED (what they mean) ate most common veriety ide only one kind of atom in the anion ite one less oxygen atom tat ate variety (same charge) thio one oxygen atom replaced by S per one more oxygen atom than in ate variety (same charge) bi one H + added to divalent anion hypo one less oxygen atom than in ite variety (same charge) di two 1

3 2

4 NAMES OF SIMPLE IONS Cations: Anions: OUS IC IDE Cr 2+ chromium (II) Cr 3+ chromium (III) N 3 nitride chromous chromic O 2 oxide Mn 2+ manganese (II) Mn 3+ manganese (III) S 2 sulfide manganous manganic H hydride Fe 2+ iron (II) Fe 3+ iron (III) ferrous ferric F fluoride Co 2+ cobalt (II) Co 3+ cobalt (III) Cl chloride Ni 2+ nickel (II) Ni 3+ nickel (III) Br bromide nickelous nickeltic Cu + copper (I) Cu 2+ copper (II) I iodide Au + gold (I) Au 3+ gold (III) aurous auric Hg 2 2+ mercury (I) Hg 2+ mercury (II) mercurous mercuric Sn 2+ tin (II) Sn 4+ tin (IV) stannous stannic Pb 2+ lead (II) Pb 4+ lead (IV) plumbous plumbic For all other Cations, the name of the ion in the same as the name of the element from which it derives. As 3+ arsenic (III) As 5+ arsentic (V) Sb 3+ antimony (III) Sb 5+ antimony (V) Bi 3+ bismuth (III) Bi 5+ bismuth (V) 3

5 Nomenclature Worksheet 1. Nomenclature magnesium sulfide potassium chloride aluminum bromide calcium oxide barium nitride lithium iodide strontium periodate magnesium iodide aluminum arsenide magnesium phosphate silver oxide sulfurous acid sulfuric acid aluminum carbonate cobalt (III) sulfide dinitogen trioxide copper (I) sulfite silver nitrate titanium (IV) nitrite tin (IV) oxide lead (IV) acetate iodide tribromide beryllium hydroxide calcium acetate hydrobromic acid chromium (III) hydrogen sulfate ammonium hydrogen phosphite iron (II) chloride gold (III) iodide magnesium hydride zinc carbonate nitrous acid mercury (II) cyanide nitric acid diiodine pentaoxide phosphoric acid ammonium fluoride sodium chlorite manganese (IV) oxide bromic acid 4

6 2. Give IUPAC name for the following compounds. H 2 CO 3 HI HC 2 H 3 O 2 BF 3 Mg 3 (PO 4 ) 2 Ca(HCO 3 ) 2 (NH 4 ) 2 S Al(OH) 3 AgClO 2 AgCl ZnO SrS K 2 S Na 3 N FeSO 3 AlI 3 Al 2 O 3 CdF 2 BaBr 2 SO 3 Li 2 BrO NI 3 Al(NO 3 ) 3 CS 2 H 2 SO 3 SiC Au 3 (PO 4 ) 2 CaBr 2 NH 4 ClO 2 SF 6 H 2 C 2 O 4 P 2 O 4 Sn(NO 3 ) 2 CaS Cu(ClO 3 ) 2 PbO 2 As(OH) 5 HClO 4 FeSO 4 Ba 3 N 2 Fe 3 (PO 4 ) 2 AlBr 3 HClO 3 N 2 O 5 HCl (aq) Ca(OH) 2 Na 2 SO 3 Co 2 O 3 Ni(NO 2 ) 2 NH 4 Cl Sr(HCO 3 ) 2 CrSO 4 Hg(HSO 3 ) 2 SnF 4 5

7 Equations Worksheet CHEMISTRY 111. Predict, complete, write and balance the following chemical equations:... A. using correct chemical formulas and B. correct physical states for reactants and products { (g),(l),(s), and (aq) } Hint: Use your solubility rules and activity series! 1) Hydrobromic acid + aluminum metal > 2) C 6 H 6 (l) + oxygen > 3) Water is slowly mixed into calcium metal 4) Gaseous dihydrogen sulfide is bubbled through a solution of chromic acetate 5) A solution of ferric nitrate is poured into a flask containing aluminum metal 6) Manganese(II) carbonate decomposes 7) Bromine liquid + aqueous cobalt(iii) iodide > 8) Solid calcium oxide + water> 9) Chromic acid + aqueous potassium hydroxide> 10) Solid silver + chlorine(g) > 6

8 11) Aqueous zinc sulfate + barium bromide(aq) > 12) Aqueous lithium carbonate + aqueous Nickel (III) bromide > 13) Solid Tin (IV) nitride decomposes 14) Acetic acid + cuprous hydroxide > 15) Solid aluminum oxide + water (l) > 16) Aqueous magnesium chloride + aqueous silver nitrate > 17) Gaseous, C 4 H 10 (butane) is combusted 18) Calcium metal is added to a solution of lead (II) acetate 19) Zinc metal is placed in steam 20) Aluminum metal combines with oxygen 7

9 Basic Stoichometry Worksheet #1 CHEMISTRY 111 Significant figures must be correct. All setups must be shown for credit 1] Given the equation: 2 C 8 H O 2 > 16 CO H 2 O a. How many moles of oxygen gas are required to make 8.33 moles of carbon dioxide? b. How many moles of C 8 H 18 must be used to produce 1.99 grams of water c. If the reaction produces 5.3 mg of carbon dioxide how many grams of water are produced? d. How many grams of oxygen are needed to react with 7.22 x molecules of C 8 H 18? 2] How many grams of aluminum oxide are formed when 25.0 grams of Aluminum are reacted with oxygen gas? a. Write the balanced equation b. Calculate the number of grams of aluminum oxide produced 3] A sample of TiCl 4 is reacted with Titanium metal to produce Titanium (III) chloride a. Write the balanced equation b. How many kg of Titanium (III) chloride was produced from 52 kg of Titanium (IV) chloride? 8

10 4] Given the equation: Al 4 C H 2 O > 4 Al(OH) CH 4 a. How many grams of water are needed to react with moles of Al 4 C 3? b. How many moles of Al 4 C 3 were reacted when 3.55 x formulas units of aluminum hydroxide were produced c. How many grams of aluminum hydroxide were produced when 673 mg of CH 4 were formed.? 5] Given the reaction: 4 C + Na 2 CO 3 + N 2 > 2 NaCN + 3 CO 181 grams of sodium carbonate were added to carbon and nitrogen. After the reaction finished, 35 g of of unreacted sodium carbonate remained. a. How many moles of carbon monoxide were produced? b. How many grams of nitrogen gas reacted with the sodium carbonate? 9

11 Stoichometry Worksheet #2 CHEMISTRY 111 Significant figures must be correct. All setups must be shown for credit 1] How many grams of calcium phosphate can be produced from the reaction of 2.50 L of M Calcium chloride with and excess of phosphoric acid? Calcium chloride + phosphoric acid > calcium phosphate + hydrochloric acid 2] How many milliliters of 1.50 M Nitric acid is required to react with g of cuprous oxide 14 HNO Cu 2 O > 6 Cu(NO 3 ) NO + 7 H 2 O 3] 60.5 ml of HNO 3 are required to react with 25.0 ml of a 1.00 M Barium hydroxide solution: HNO 3 (aq) + Ba(OH) 2 (aq) > H 2 O(s) + Ba(NO 3 ) 2 (aq) (UNBALANCED) Find the Molarity of the nitric acid solution 4] For the following equation determine which reactant is the limiting reactant and which reactant is in excess. The amounts of reagent used are shown. Show calculations to support your choices 3Fe + 4H 2 O > Fe 3 O 4 + 4H g 16.0g The limiting reactant is The excess reactant is 5] 35.5 g of silver nitrite is reacted with 35.5 grams of sodium sulfide which produces silver sulfide and sodium nitrite. a. Write and balance the equation b.. Calculate the number of grams of silver sulfide produced. c. How many grams of silver nitrite will remain at the end of the reaction? 10

12 d. How many grams of sodium sulfide will remain at the end of the reaction? 6] Calculate the grams of silver chloride produced from ml of 10.0M magnesium chloride with ml of 2.20 M silver nitrate 2AgNO 3 + MgCl 2 >Mg(NO 3 ) 2 (s) + 2AgCl(aq) 7] Aluminum reacts with oxygen to form aluminum oxide: Al + O 2 > Al 2 O 3 (unbalanced) If 75.0g of Al and g of oxygen are reacted, and 75.0 g of aluminum oxide is produced, what is the percent yield for the reaction? 8]. According to the following reaction:... 2 Cu(s) + O 2 (g) > + 2 CuO(s) a. If the percentage yield is 96.7% how many grams of CuO will be produced from 13.4 g of Cu? b..how many grams of Cu must you use to produce 5.00 x mg CuO? 11

13 Nomenclature Worksheet Key 1. Nomenclature magnesium sulfide MgS potassium chloride KCl aluminum bromide AlBr 3 calcium oxide CaO barium nitride Ba 3 N 2 lithium iodide LiI strontium periodate Sr (IO 4 ) 2 magnesium iodide MgI 2 magnesium aluminum arsenide AlAs phosphate Mg 3 (PO 4 ) 2 silver oxide Ag 2 O sulfurous acid H 2 SO 3 sulfuric acid H 2 SO 4 aluminum carbonate Al 2 (CO 3 ) 3 cobalt (III) sulfide Co 2 S 3 dinitogen trioxide N 2 O 3 copper (I) sulfite Cu 2 SO 3 silver nitrate AgNO 3 titanium (IV) nitrite Ti(NO 2 ) 4 tin (IV) oxide SnO 2 lead (IV) acetate Pb(C 2 H 3 O 2 ) 4 iodide tribromide IBr 3 beryllium hydroxide Be(OH) 2 calcium acetate Ca(C 2 H 3 O 2 ) 2 hydrobromic acid HBr iron (II) chloride FeCl 2 chromium (III) hydrogen sulfate Cr(HSO 4 ) 3 gold (III) iodide AuI 3 ammonium monohydrogen phosphate (NH 4 ) 2 (HPO 4 ) magnesium hydride MgH 2 zinc carbonate ZnCO 3 nitrous acid HNO 2 mercury (II) cyanide Hg(CN) 2 nitric acid HNO 3 diiodine pentaoxide I 2 O 5 phosphoric acid H 3 PO 4 ammonium fluoride NH 4 F sodium chlorite NaClO 2 manganese (IV) oxide MnO 2 bromic acid HBrO 3 12

14 2. Give IUPAC name for the following compounds. H 2 CO 3 carbonic acid HI hydroiodic acid HC 2 H 3 O 2 acetic acid BF 3 boron trifluoride Mg 3 (PO 4 ) 2 magnesium phosphate AgCl silver chloride Ca(HCO 3 ) 2 bicarbonate or calcium hydrogen carbonate ZnO zinc oxide (NH 4 ) 2 S ammonium sulfide SrS strontium sulfide Al(OH) 3 aluminum hydroxide K 2 S potassium sulfide AgClO 2 silver chlorite Na 3 N sodium nitride FeSO 3 iron (II) sulfite AlI 3 aluminum iodide Al 2 O 3 aluminum oxide CdF 2 cadmium fluoride BaBr 2 barium bromide SO 3 sulfur trioxide LiBrO lithium hypobromite NI 3 nitrogen triiodide Al(NO 3 ) 3 aluminum nitrate CS 2 carbon disulfide H 2 SO 3 sulfurous acid SiC silicon monocarbide AuPO 4 gold (III) phosphate CaBr 2 calcium bromide NH 4 ClO 2 ammonium chlorite SF 6 sulfur hexafluoride H 2 C 2 O 4 oxalic acid P 2 O 4 diphosphorous tetraoxide or diphosphorous tetroxide Sn(NO 3 ) 2 tin (II) nitrate CaS calcium sulfide Cu(ClO 3 ) 2 copper (II) chlorate PbO 2 lead (IV) oxide Al(OH) 3 aluminum hydroxide HClO 4 perchloric acid FeSO 4 iron (II) sulfate Ba 3 N 2 barium nitride Fe 3 (PO 4 ) 2 iron (II) phosphate AlBr 3 aluminum bromide HClO 3 chloric acid N 2 O 5 dinitrogen pentaoxide HCl (aq) hydrochloric acid Ca(OH) 2 calcium hydroxide Na 2 SO 3 sodium sulfite Co 2 O 3 cobalt (III) oxide Ni(NO 2 ) 2 nickel (II) nitrite NH 4 Cl ammonium chloride Sr(HCO 3 ) 2 Strontium hydrogen carbonate Strontium bicarbonate CrSO 4 chromium (II) sulfate Hg(HSO 3 ) 2 mercury (II) hydrogen sulfite mercury (II) bisulfite SnF 4 tin (IV) flouride 13

15 Equations Worksheet CHEMISTRY 111 Predict, complete, write and balance the following chemical equations:... A. using correct chemical formulas and B. correct physical states for reactants and products { (g),(l),(s), and (aq) } Hint: Use your solubility rules and activity series! 1) Hydrobromic acid + aluminum metal > 6HBr(aq) + 2Al(s) > 2AlBr3(aq) + 3H2(g) 2) C 6 H 6 (l) + oxygen > 2C6H6(l) + 15O2(g) > 12CO2(g) + 6H2O(g) 3) Water is slowly mixed into calcium metal Ca(s) + 2H2O(l) > Ca(OH) 2 (aq) + H 2 (g) 4) Gaseous dihydrogen sulfide is bubbled through a solution of chromic acetate 3H2S(g) + 2Cr(C2H3O2)3(aq) > Cr2S3(s) + 6HC2H3O2(aq) 5) A solution of ferric nitrate is poured into a flask containing aluminum metal Fe(NO3)3(aq) + Al(s) > Al(NO3)3(aq) Fe(s) 6) Manganese(II) carbonate decomposes MnCO3(s) > MnO(s) + CO2(g) 7) Bromine (liquid) + aqueous cobalt(iii) iodide > 3Br2(l) + 2CoI3(aq) > 3I2(s) + 2CoBr3(aq) 8) Solid calcium oxide + water> CaO(s) + H2O(l) > Ca(OH)2(aq) 9) Chromic acid + aqueous potassium hydroxide> H2CrO4(aq) + 2KOH(aq) > 2H2O(l) + K2CrO4(aq) 10) Solid silver + chlorine(g) > 2Ag(s) + Cl2(g) > 2AgCl(s) 11) Aqueous zinc sulfate + barium bromide(aq) > ZnSO4(aq) + BaBr2(aq) > BaSO4(s) + ZnBr2(aq) 14

16 12) Aqueous lithium carbonate + aqueous Nickel (III) bromide > 3Li2CO3(aq) + 2NiBr3(aq) > 6LiBr(aq) + Ni2(CO3)3(s) 13) Solid Tin (IV) nitride decomposes Sn3N4(s) > 3Sn(s) + 2N2(g) 14) Acetic acid + cuprous hydroxide > HC2H3O2(aq) + CuOH(s) > CuC2H3O2(aq) + H2O(l) 15) Solid aluminum oxide + water (l) > Al2O3(s) + 3H2O (l) > 2Al(OH)3(s) 16) Aqueous magnesium chloride + aqueous silver nitrate > MgCl2(aq) + 2AgNO3(aq) > 2AgCl(s) + Mg(NO3)2(aq) 17) Gaseous, C 4 H 10 (butane) is combusted 2C4H10(g) + 13O2(g) > 8CO2(g) + 10H2O(g) 18) Calcium metal is added to a solution of lead (II) acetate Ca(s) + Pb(C2H3O2)2(aq) > Ca(C2H3O2)2(aq) + Pb(s) 19) Zinc metal is placed in steam Zn(s) + 2H2O(g) > Zn(OH)2(s) + H2(g) 20) Aluminum metal combines with oxygen 4Al(s) + 3O2(g) > 2Al2O3(s) 15

17 Basic Stoichometry Worksheet #1 CHEMISTRY 111 Significant figures must be correct. All setups must be shown for credit 1] Given the equation: 2C 8 H O 2 > 16CO H 2 O a. How many moles of oxygen gas are required to make 8.33 moles of carbon dioxide? 25mol O moles CO 2 X = 13.0 moles O 16mol CO 2 2 b. How many moles of C 8 H 18 must be used to produce 1.99 grams of water 1.99 mg H 2 O X 1mol H 2O 18.0g X 2mol C 8H 18 18mol H 2 O = 1.23 x 102 mol C 8 H 18 c. If the reaction produces 5.3 mg of carbon dioxide how many grams of water are produced? 5.3mg CO 2 X 103 g 1mg X 1mol CO g CO 2 X 18mol H 2O 16mol CO 2 X 18.0g H 2O 1mol H 2 O = 2.4 x 10 3 g H2O d. How many grams of oxygen are needed to react with 7.22 x molecules of C 8 H 18? 7.22 x mol C 8 H 18 molec. C 8 H 18 X 6.02x10 23 molec X 25mol O 2 X 32.0g O 2 = 2mol C 8 H 18 1mol O x 10 3 g O 2 2] How many grams of aluminum oxide are formed when 25.0 grams of Aluminum are reacted with oxygen gas? a. Write the balanced equation 4 Al + 3 O 2 > 2 Al 2 O 3 b. Calculate the number of grams of aluminum oxide produced 1mol Al 25.0g Al X 27.0g Al X 1mol Al 2O 3 2mol Al X 102.0g Al 2O 3 1mol Al 2 O 3 = 47.2g Al 2 O 3 3] A sample of TiCl 4 is reacted with Titanium metal to produce Titanium (III) chloride a. Write the balanced equation 3 TiCl 4 + Ti > 4 TiCl 3 b. How many kg of Titanium (III) chloride was produced from 52 kg of Titanium (IV) chloride? 52 Kg TiCl4 X 103 g 1Kg X 1mol TiCl g TiCl 4 X. 4mol TiCl 3 3mol TiCl 4 X 154.4g TiCl 3 1mol TiCl 3 X 103 Kg 1g = 56.4 Kg TiCl 3 16

18 4] Given the equation: Al 4 C H 2 O > 4Al(OH) CH 4 a. How many grams of water are needed to react with moles of Al 4 C 3? 100.0mol Al 4 C 3 X 12mol H 2O X 18.01g H 2O 1mol Al 4 C 3 1mol H 2 O = x 104 g H 2 O b. How many moles of Al 4 C 3 were reacted when 3.55 x formulas units of aluminum hydroxide were produced? 3.55 x formula units Al(OH) 3 X 1mol Al(OH) x form. units X 1mol Al 4C 3 4mol Al(OH) 3 = 1.47 x mol Al(OH) 3 c. How many grams of aluminum hydroxide were produced when 673 mg of CH 4 were formed.? 673 mg CH4 X 103 g 1mg X 1mol CH g CH4 X 4mol Al(OH) 3 3mol CH4 X 78.0g Al(OH) 3 1mol Al(OH) 3 = 5] Given the reaction: 4 C + Na 2 CO 3 + N 2 > 2 NaCN + 3 CO 4.37g Al(OH) grams of sodium carbonate were added to an excess of carbon and nitrogen. After the reaction finished, 35 g of of unreacted sodium carbonate remained. a. How many moles of carbon monoxide were produced? 181g total Na 2 CO 3 35g unreacted Na 2 CO 3 = 146 g Na 2 CO 3 reacted 146g Na 2 CO 3 X 1mol Na 2CO 3 3mol CO X = 4.13 mol CO 106.0g Na 2 CO 3 1mol Na 2 CO 3 b. How many grams of nitrogen gas reacted with the sodium carbonate? 146g Na 2 CO 3 X 1mol Na 2CO g X 1mol N 2 1mol Na 2 CO 3 X 28.0g N 2 1mol N 2 = 38.6 g N 2 17

19 Stoichometry Worksheet #2 CHEMISTRY 111 Significant figures must be correct. All setups must be shown for credit 1] How many grams of calcium phosphate can be produced from the reaction of 2.50 L of M Calcium chloride with and excess of phosphoric acid? Calcium chloride + phosphoric acid > calcium phosphate + hydrochloric acid 3CaCl 2 + 2H 3 PO 4 > Ca 3 (PO 4 ) 2 + 6HCl 2.50L CaCl 2 X L CaCl 2 1mol X. 1mol Ca 3(PO 4 ) 2 X g Ca 3(PO 4 ) 2 3mol CaCl 2 1mol = _ 64.6g Ca 3 (PO 4 ) 2 2] How many milliliters of 1.50 M Nitric acid is required to react with g of cuprous oxide 14 HNO 3 + 3Cu 2 O > 6 Cu(NO 3 ) NO + 7H 2 O 100.0g Cu 2 O X 1mol Cu 2O X 14mol HNO g 3mol Cu 2 O X 1000ml HNO 3 = 2.18 x mol HNO 3 ml HNO 3 3 3] 60.5 ml of HNO 3 are required to react with 25.0 ml of a 1.00 M Barium hydroxide solution: 2 HNO 3 (aq) + Ba(OH) 2 (aq) > 2 H 2 O(s) + Ba(NO 3 ) 2 (aq) (BALANCED) Find the Molarity of the nitric acid solution 1L 25.0ml Ba(OH) 2 X 10 3 ml X. 1.00mol Ba(OH) 2 2mol HNO 3 X = mol HNO 1L 1mol Ba(OH) 3 2 M HNO 3 = mol HNO L soln = M 4] For the following equation determine which reactant is the limiting reactant and which reactant is in excess. The amounts of reagent used are shown. Show calculations to support your choices 3Fe + 4H 2 O > Fe 3 O 4 + 4H g 16.0g 40.0g Fe X 1molFe 55.8g X 1mol Fe 3O 4 3molFe = mol Fe 3 O g H 2 O X 1molH 2O 18.0g X 1mol Fe 3O 4 4mol H 2 O = mol Fe 3O 4 <==== amount made The limiting reactant is H 2 O The excess reactant is Fe 5] 35.5 g of silver nitrite is reacted with 35.5 grams of sodium sulfide which produces silver sulfide and sodium nitrite. a. Write and balance the equation 2AgNO 2 + Na 2 S > Ag 2 S + 2NaNO 2 b.. Calculate the number of grams of silver sulfide produced. 35.5g AgNO 2 X 1mol AgNO g X 1mol Ag 2S 2mol AgNO 2 = mol Ag 2 S<==== amount made 35.5g Na 2 S X. 1mol Na 2S 78.0g X 1mol Ag 2S 1mol Na 2 S = mol Ag 2S mol mol Ag 2 S X 247.8g Ag 2S = 28.5g Ag 1mol 2 S 18

20 c. How many grams of silver nitrite will remain at the end of the reaction? Answer 0 g The AgNO 2 is the limiting reactant d. How many grams of sodium sulfide will remain at the end of the reaction? mol Ag 2 S X 1mol Na 2S 1 mol Ag 2 S X 78.0 g Na 2S 1mol = 8.97g Na 2 S used Excess Na 2 S = 35.5g 8.97g = 26.5g Na 2 S 6] Calculate the grams of silver chloride produced from ml of 10.0M magnesium chloride with ml of 2.20 M silver nitrate 2AgNO 3 + MgCl 2 >Mg(NO 3 ) 2 (s) + 2AgCl(aq) L MgCl 2 X 10.0mol MgCl 2 1 L 2mol AgCl X = mol AgCl<==== amount made 1mol MgCl L AgNO 3 X 2.20molAgNO 3 1L X 2mol AgCl 2mol AgNO 3 = mol AgCl 143.3g AgCl mol AgCl X = 28.7g AgCl 1mol 7] Aluminum reacts with oxygen to form aluminum oxide: 4Al + 3O 2 > 2Al 2 O 3 (balanced) If 75.0g of Al and g of oxygen are reacted, and 75.0 g of aluminum oxide is produced, what is the percent yield for the reaction? 1mol Al 75.0g Al X 27.0g X 2mol Al 2O 3 4mol Al = 1.39 mol Al 2 O 3 <==== amount made g O 2 X 1mol O g X 2mol Al 2O 3 3mol O 2 = 4.17 mol Al 2 O mol Al 2 O 3 X 102.0g Al 2O 3 1mol = g Al 2 O 3 % Yield = 75.0g (100) = 52.9% 141.8g 8]. According to the following reaction:... 2 Cu(s) + O 2 (g) > + 2 CuO(s) a. If the percentage yield is 96.7% how many grams of CuO will be produced from 13.4 g of Cu? 1mol Cu 2mol CuO 13.4 g Cu X X 63.5g 2mol Cu X 79.5gCuO 96.7g Actual X = 16.2 g CuO 1mol 100g Theo. b..how many grams of Cu must you use to produce 5.00 x mg CuO? 5.00 x mg CuO X 103 1mol CuO X 1mg 79.5g X 2mol Cu 2mol CuO X 63.5g Cu 1mol X 100g 96.7g = 4.13 x 1010 g 19