An electrolyte dissolves in water if:

lattice energy is less than hydration energy

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lattice energy is greater than hydration energy

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lattice energy is equal to hydration energy

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dissolution is endothermic

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Solution

The correct option is A lattice energy is less than hydration energy
If the hydration energy is equal to or greater than the lattice energy, then the salt is water-soluble. In salts for which the hydration energy is higher than the lattice energy, solvation occurs with a release of energy in the form of heat.

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