AP EAMCET20224 Jul 2022Morning ShiftChemistrys Block ElementsActual
Assertion (A):- MgSO 4 is readily soluble in water Reason (R):- The greater hydration enthalpy of Mg 2 + ions overcome its lattice enthalpy.
Options
- AA and R both are correct and R is the correct explanation of A.
- BA and R both are correct but R is not the correct explanation of A.
- CA is correct but R is not correct
- DA is incorrect but R is correct
Correct answer
A. A and R both are correct and R is the correct explanation of A.
Step-by-step solution
For a compound to be soluble in water, hydration enthapy must dominate over the lattice enthalpy. In MgSO 4 , Mg 2 + being smaller in size, hydration enthalpy dominates over the lattice enthalpy of MgSO 4 . Hence, MgSO 4 is readily soluble in water.