Q.

Statement 1: BeSO4 and MgSO4 are soluble in water.Statement 2: BaSO4 is water insoluble because lattice energy of BaSO4 is higher than its hydration energy.

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a

Both statements 1 and 2 are correct

b

Statement 1 is correct statement 2 is incorrect

c

Statement 1 is incorrect statement 2 is correct

d

Both statements 1 and 2 are incorrect

answer is A.

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Detailed Solution

BeSO4 and MgSO4 are readily soluble in water; the solubility decreases from CaSO4 to BaSO4. The greater hydration enthalpies of Be2+ and Mg2+ ions overcome the lattice enthalpy factor and therefore their sulphates are soluble in water.
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Statement 1: BeSO4 and MgSO4 are soluble in water.Statement 2: BaSO4 is water insoluble because lattice energy of BaSO4 is higher than its hydration energy.