Solubility of an ionic compound in water is mainly dependent on:
a.Lattice enthalpy , b. Hydration enthalphy
Both these factors oppose each other and the resultant of these determines the solubility of an ionic compound in water. If lattce enthalpy has greater value, the compound is less soluble.
In case hydration enthalpy has greater value, the compound is
highly soluble in water.
Which of the following is less soluble in water?

Options

A. `Mg(OH)_(2)`
B. `Ca(OH)_(2)`
C. `Sr(OH)_(2)`
D. `Ba(OH)_(2)`

Answer

A

Explanation

Solubility of alkaline earth metal hydroxides increases down the group `(darr)`.