The correct order of the solubility of alkali | vedclass

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Question

(A) The solubility of alkaline earth metal sulphates decreases down the group from $Be$ to $Ba$. This is because the hydration energy decreases more r

Vedclass · Accepted Answer

$Mg > Ca > Sr > Ba$

Vedclass · Answer

(A) The solubility of alkaline earth metal sulphates decreases down the group from $Be$ to $Ba$. This is because the hydration energy decreases more rapidly than the lattice energy as the size of the cation increases down the group. Since the sulphate ion is very large,the lattice energy remains relatively constant,while the hydration energy decreases significantly. Therefore,the correct order of solubility is $MgSO_4 > CaSO_4 > SrSO_4 > BaSO_4$.

The correct order of the solubility of alkaline earth metal sulphates in water is

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