A) 2.15 g
B) 2.48 g
C) 2.32 g
D) 2.64 g
Correct Answer: A
Solution :
[a] Unlike other metal carbonates that usually decomposes into metal oxides, liberating carbon dioxide, silver carbonate on heating decomposes into elemental silver liberating mixture of carbon dioxide and oxygen gas as |
\[A{{g}_{2}}(s)\xrightarrow[{}]{Heat}2Ag(s)+C{{O}_{2}}(g)+\frac{1}{2}{{O}_{2}}(g)\] |
\[MW=276g\] \[2\times 108=216g\] |
Hence, 2.76 g of \[A{{g}_{2}}C{{O}_{3}}\] oh heating will give |
\[\frac{216}{276}\times 2.75=2.16g\] Ag as residue. |
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