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Which of the following alkali-metal hydroxides is the least soluble in water?

(a) CsOH

(b) KOH

(c) NaOH

(d) LiOH

1 Answer

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Best answer

Answer is : (d) LiOH

Except LiOH, all the alkali metal hydroxides are highly soluble in water. LiOH is much less soluble on account of high lattice enthalpy.

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