Question

Is ${\mathrm{NH}}_4\mathrm{Br}$ an acid or base?

Answer 1

Ammonium bromide$\left({\mathrm{NH}}_4\mathrm{Br}\right)$ is formed by the reaction of strong acid hydrogen bromide$\left(\mathrm{HBr}\right)$ and a weak base$\left({\mathrm{NH}}_3\right)$. We know that the salt of strong acid and weak base are acidic in nature.

$\mathrm{HBr}\left(\mathrm{aq}\right)+{\mathrm{NH}}_4\mathrm{OH}\left(\mathrm{liq}.\right)\to {\mathrm{NH}}_4\mathrm{Br}\left(\mathrm{aq}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{liq}.\right)$

Hence, we can say that${\mathrm{NH}}_4\mathrm{Br}$ is an acid.