a. What happens when copper carbonate is heated strongly?
b. What happens when $C l_{2}$ gas is passed through the $K I$ solution?

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Solution

A. It decomposes forming Copper oxide and carbon dioxide $(C O_{2})$
$C u C O_{3} (s) Δ \to C u O (s) + C O_{2} (g)$
B. Iodine gas will evolve because chlorine is more reactive than iiodine.
$C l_{2} (g) + 2 K I (a q) \to 2 K C l (a q) + I_{2} (g)$

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