Assertion (A):- MgSO 4 is readily soluble in water Reason (R):- The greater hydration enthalpy of Mg 2 +…

Assertion (A):- MgSO4 is readily soluble in water

Reason (R):- The greater hydration enthalpy of Mg2+ ions overcome its lattice enthalpy.

  1. A and R both are correct and R is the correct explanation of A.
  2. A and R both are correct but R is not the correct explanation of A.
  3. A is correct but R is not correct
  4. A is incorrect but R is correct

Solution

For a compound to be soluble in water, hydration enthapy must dominate over the lattice enthalpy. In MgSO4, Mg2+ being smaller in size, hydration enthalpy dominates over the lattice enthalpy of MgSO4. Hence, MgSO4 is readily soluble in water.

Asked in: AP EAMCET 2022 (04 Jul Shift 1)

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