Write the balanced chemical equation for the following and identify the type of reaction in each case –
$(A) P o t a s s i u m b r o m i d e (a q) + B a r i u m i o d i d e (a q) \to P o t a s s i u m i o d i d e (a q) + B a r i u m b r o m i d e (s)$

$(B) Z i n c c a r b o n a t e (s) \to Z i n c o x i d e (s) + C a r b o n d i o x i d e (g)$

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Solution

This reaction is a double displacement reaction.

$(B) Z n C O_{3} \to Z n O (s) + C O_{2} (g)$

This reaction is a decomposition reaction.

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1) zinc carbonate= zinc oxide+ carbon dioxide

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