Q7) Silver jewellery is usually made from silver and copper alloys. The amount of copper in an alloy can vary considerably. The finest quality alloy is sterling silver, which is 92.5% silver by mass. To determine the composition of a silver-copper alloy, a jeweller dissolved 0.141 g of metal shavings in 50 mL of concentrated nitric acid and then added 1.00 M KCI solution until no more precipitate formed. Filtration and drying yielded 0.164 g of AgCl precipitate. What was the mass composition of the silver alloy? (87.5%)
Q7) Silver jewellery is usually made from silver and copper alloys. The amount of copper in an alloy can vary considerably. The finest quality alloy is sterling silver, which is 92.5% silver by mass. To determine the composition of a silver-copper alloy, a jeweller dissolved 0.141 g of metal shavings in 50 mL of concentrated nitric acid and then added 1.00 M KCI solution until no more precipitate formed. Filtration and drying yielded 0.164 g of AgCl precipitate. What was the mass composition of the silver alloy? (87.5%)
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter4: Reactions In Aqueous Solution
Section: Chapter Questions
Problem 77QAP: A 300.0-g sample of a solid is made up of a uniform mixture of NaNO3, MgCl2, and BaCl2. A 100.0-g...
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Transcribed Image Text:Q7) Silver jewellery is usually made from silver and copper alloys. The amount of
copper in an alloy can vary considerably. The finest quality alloy is sterling silver, which
is 92.5% silver by mass.
To determine the composition of a silver-copper alloy, a jeweller dissolved 0.141 g of
metal shavings in 50 mL of concentrated nitric acid and then added 1.00 M KCI solution
until no more precipitate formed. Filtration and drying yielded 0.164 g of AgCl
precipitate. What was the mass composition of the silver alloy? (87.5%)
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