Among the given four bases, which one is considered as the weakest base?

Sodium hydroxide

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Potassium hydroxide.

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Lithium hydroxide.

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Calcium hydroxide.

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Solution

The correct option is D
Calcium hydroxide.

On comparing the four given bases, Calcium hydroxide is a weak base as it dissociates slightly in water. ie, it is not very soluble in water. The low concentration of hydroxyl ions produced is due to the very low dissociation. Therefore it is a weak base among these four bases.

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