Q10 / 90 · JEE Main 2015 (04 Apr) · Chemistry

Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?

A
$S r S O_{4}$
B
$C a S O_{4}$
Correct answer
C
$B e S O_{4}$
D
$B a S O_{4}$

Solution

Δ H_{Hydration} > Δ H_{Lattice}

Salt is soluble. BeSO₄ is soluble due to high hydration energy of small Be²⁺ ion. K_sp for BeSO₄ is very high.

Hence, the correct answer is option: 'C'.

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