NEET 2007 Chemistry question

In which of the following the hydration energy is higher than the lattice energy?

(1)
(2)
(3)Correct
(4)

Answer: (3)

Solution

A salt dissolves appreciably when the hydration energy of its ions exceeds its lattice energy. For alkaline earth sulphates, the large anion determines a lattice energy that varies little down the group, while the hydration energy of the cation falls rapidly with

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Question ID VK-089857