JEE Main Chemistry question

Which of the following alkaline earth metal sulphates has a hydration enthalpy higher than its lattice enthalpy?

(A)
(B)Correct
(C)
(D)

Answer: (B)

Solution

is readily soluble in water, which requires its hydration enthalpy to exceed its lattice enthalpy; this is consistent with 's very small size giving it an unusually large hydration enthalpy. and (C, D) are insoluble (lattice enthalpy exceeds

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Question ID VK-138022