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
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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![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%)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F80312b6d-dd66-4f6f-a9e1-a445006ac948%2F0ddbaea2-e116-4856-9495-ca7fc56b132d%2Fpcwhfv_processed.png&w=3840&q=75)
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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