Q.

Which of the following compound is insoluble in water?

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a

CuSO4

b

PbSO4

c

Bi2SO43

d

CdSO4

answer is B.

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Detailed Solution

The hydration energy of PbSO4 is less than lattice energy. So, it cannot soluble in water.CuSO4 ,  Bi2SO43Cd  SO4, hydration energies are more than lattice energy.
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