Some Basic Concepts Of Chemistry Question 141
Question: A silver coin weighing 11.34 g was dissolved in nitric acid. When sodium chloride was added to the solution all the silver (present as $ AgNO _3 $ ) was precipitated as silver chloride. The weight of the precipitated silver chloride was 14.35 g. Calculate the percentage of silver in the coin -
Options:
A) 4.8%
B) 95.2%
C) 90%
D) 80%
Show Answer
Answer:
Correct Answer: B
Solution:
[b] $ \underset{108}{\mathop{Ag}},+2HNO _3\to AgNO _3+NO _2+H _2O $ $ AgNO _3+NaCl\to AgCl+NaNO _3 $
