A diacidic base has one replaceable hydroxide ion

Assertion : Equivalent weight of a base =("Molecular weight")/("Acidity") Reason : Acidity is the number of replaceable hydrogen atoms in one molecule of the base.

The conjugate base of hydroxide ion is

An alkoxide ion is a stronger base than hydroxide ion. Justify.

when excess of a base is dissolved in a solution of sodim hydroxide, the concetration of hydroxide ion in the solution decrease.