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4. A mixture of NaCl and NaBr weighing 3.5084 g was dissolved and treated with enough AgNO3 to precipitate all of the chloride and bromide as AgCl and AgBr. The washed precipitate was treated with KCN to solubilize the silver, and the resulting solution was electrolyzed. The equations are: NaCl + AgNO3 AgCl + NaNO3 AgCl + 2KCN KAg (CN)2 + KCl 4KAg (CN)₂ + 4KOH yields yields yields yields NaBr + AgNO3 AgBr + NaNO3 AgBr +2KCN KAg (CN)2 + KBr yields 4Ag +8 KCN + O₂ + 2H₂O After the final step was complete, the deposit of metallic silver weighed 5.5028 g. What was the composition of the initial mixture? 65.23% NaBr and 34.77% NaCl O 22.66% NaBr and 77.34% NaCl 56.33% NaBr and 43.67% NaCl

4. A mixture of NaCl and NaBr weighing 3.5084 g was dissolved and treated with enough AgNO3 to precipitate all of the chloride and bromide as AgCl and AgBr. The washed precipitate was treated with KCN to solubilize the silver, and the resulting solution was electrolyzed. The equations are: NaCl + AgNO3 AgCl + NaNO3 AgCl + 2KCN KAg (CN)2 + KCl 4KAg (CN)₂ + 4KOH yields yields yields yields NaBr + AgNO3 AgBr + NaNO3 AgBr +2KCN KAg (CN)2 + KBr yields 4Ag +8 KCN + O₂ + 2H₂O After the final step was complete, the deposit of metallic silver weighed 5.5028 g. What was the composition of the initial mixture? 65.23% NaBr and 34.77% NaCl O 22.66% NaBr and 77.34% NaCl 56.33% NaBr and 43.67% NaCl

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter17: Electrochemistry
Section: Chapter Questions
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4. A mixture of NaCl and NaBr weighing 3.5084 g was dissolved and treated with enough AgNO3 to precipitate all of the chloride and bromide as AgCl and AgBr. The washed precipitate was treated with KCN to solubilize the silver, and the resulting solution was electrolyzed. The equations are: NaCl + AgNO3 AgCl + NaNO3 AgCl + 2KCN KAg (CN)₂ + KCl 4KAg (CN)2 + 4KOH yields yields yields yields NaBr + AgNO3 AgBr + NaNO3 AgBr +2KCN KAg(CN)₂ + KBr 4Ag + 8 KCN + O₂ + 2H₂O yields After the final step was complete, the deposit of metallic silver weighed 5.5028 g. What was the composition of the initial mixture? 65.23% NaBr and 34.77% NaCl O 22.66% NaBr and 77.34% NaCl 56.33% NaBr and 43.67% NaCl 65.23% NaCl and 34.77% NaBr
Transcribed Image Text:4. A mixture of NaCl and NaBr weighing 3.5084 g was dissolved and treated with enough AgNO3 to precipitate all of the chloride and bromide as AgCl and AgBr. The washed precipitate was treated with KCN to solubilize the silver, and the resulting solution was electrolyzed. The equations are: NaCl + AgNO3 AgCl + NaNO3 AgCl + 2KCN KAg (CN)₂ + KCl 4KAg (CN)2 + 4KOH yields yields yields yields NaBr + AgNO3 AgBr + NaNO3 AgBr +2KCN KAg(CN)₂ + KBr 4Ag + 8 KCN + O₂ + 2H₂O yields After the final step was complete, the deposit of metallic silver weighed 5.5028 g. What was the composition of the initial mixture? 65.23% NaBr and 34.77% NaCl O 22.66% NaBr and 77.34% NaCl 56.33% NaBr and 43.67% NaCl 65.23% NaCl and 34.77% NaBr
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