Some Basic Concepts Of Chemistry Question 214
Question: 2.76 g of silver carbonate on being strongly heated yield a residue weighing [Pb. CET 2003]
Options:
A) 2.16 g
B) 2.48 g
C) 2.64 g
D) 2.32 g
Show Answer
Answer:
Correct Answer: A
Solution:
$ 2Ag _2CO _3\xrightarrow{\Delta }4Ag+2CO _2+O _2 $
$ 2\times 276,gm $ $ 4\times 108,gm $
$ \because $ $ 2\times 276gm $ of $ Ag _2CO _3 $ gives $ 4\times 108,gm $
$ \therefore $ $ 1,gm $ of $ Ag _2CO _3 $ gives $ =\frac{4\times 108}{2\times 276} $
$ \therefore $ $ 2.76,gm $ of $ Ag _2CO _3 $ gives $ \frac{4\times 108\times 2.76}{2\times 276}=2.16,gm $
