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Question

a. What happens when copper carbonate is heated strongly?
b. What happens when Cl2 gas is passed through the KI solution?

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Solution

A. It decomposes forming Copper oxide and carbon dioxide (CO2)
CuCO3(s)ΔCuO(s)+CO2(g)
B. Iodine gas will evolve because chlorine is more reactive than iiodine.
Cl2(g)+2KI(aq)2KCl(aq)+I2(g)

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