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Question

When CuSO4.5H2O is heated, the products formed are:

A
CuSO4.3H2O and CO2
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B
CuSO4.10H2O and 5H2O
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C
CuSO4 and 5H2O
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D
Cu(OH)2 and H2SO4
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Solution

The correct option is C CuSO4 and 5H2O
Hydrated copper sulphate (CuSO4.5H2O) is blue in colour. When it is heated, compound loses its water of crystallization. Hence, the colour of the compound changes from blue to white as it breaks apart to form anhydrous CuSO4 and H2O. The reaction involved is:

CuSO4.5H2O(s)HeatCuSO4(s) + 5H2O(l)

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