Question

Sodium hydroxide is a monoacidic base. Give reason

Answer 1

Monoacidic base: A monoacidic base is a base that generates one hydroxide ion $\left({\mathrm{OH}}^{-}\right)$ when one of its molecules undergoes complete ionization. For Example, Sodium hydroxide $\left(\mathrm{NaOH}\right)$, Ammonium hydroxide $\left({\mathrm{NH}}_4\mathrm{OH}\right)$
When sodium hydroxide $\left(\mathrm{NaOH}\right)$ breaks down, one Hydroxide ion$\left({\mathrm{OH}}^{-}\right)$ is formed per molecule so it is called a monoacidic base.

$\underset{\left(\mathrm{Sodium}\mathrm{hydroxide}\right)}{\mathrm{NaOH}}+{\mathrm{H}}_2\mathrm{O}\to \underset{\left(\mathrm{Hydroxide}\mathrm{ion}\right)}{{\mathrm{OH}}^{-}\left(\mathrm{aq}\right)}+{\mathrm{Na}}^{+}\left(\mathrm{aq}\right)$

Final Answer: Hence, Sodium hydroxide (NaOH) is a mono acidic base.