The sBlock Elements - Result Question 32
####38. Which one is the correct statement with reference to solubility of $MgSO_4$ in water?
[1996]
(a) $SO_4{ }^{2-}$ ion mainly contributes towards hydration energy
(b) Sizes of $Mg^{2+}$ and $SO_4{ }^{2-}$ are similar
(c) Hydration energy of $MgSO_4$ is higher in comparison to its lattice energy
(d) Ionic potential (charge/radius ratio) of $Mg^{2+}$ is very low
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Solution:
- (c) $MgSO_4$ is the only alkaline earth metal sulphate which is soluble in water and for solubility hydration energy should be greater than lattice energy.
