MCQ
The salt having the least solubility in water is
- A$BaCl_2$
- B$Ba(NO_3)_2$
- C$MgSO_4$
- ✓$BaSO_4$
✓
Answer
Correct option: D.
$BaSO_4$
d
The hydration enthalpy of barium sulphate is less than that of magnesium sulphate. Because of the big size of barium metal ion, the lattice enthalpy of barium sulphate increases so it is least soluble in water.
The hydration enthalpy of barium sulphate is less than that of magnesium sulphate. Because of the big size of barium metal ion, the lattice enthalpy of barium sulphate increases so it is least soluble in water.
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