Question
Which one is the correct statement with reference to solubility of $$MgS{O_4}$$ in water?
A.
$$SO_4^{2 - }\,ion$$ mainly contributes towards hydration energy.
B.
Sizes of $$M{g^{2 + }}$$ and $$SO_4^{2 - }$$ are similar.
C.
Hydration energy of $$MgS{O_4}$$ is higher in comparison to its lattice energy.
D.
Ionic potential (charge/radius ratio) of $$M{g^{2 + }}$$ is very low.
Answer :
Hydration energy of $$MgS{O_4}$$ is higher in comparison to its lattice energy.
Solution :
$$MgS{O_4}$$ is the only alkaline earth metal sulphate which is soluble in water and for solubility hydration energy should be greater than lattice energy.