Answer
This salt is acidic.
Work Step by Step
1. Analyze each type of ion in this salt, and determine which is stronger.
- $N{H_4}^+$:
- Weak bases have weak acids as conjugate pair.
- $N{H_4}^{+}$ is the conjugate acid of $NH_3$, which is a weak base.
- $N{H_4}^{+}$: Weak acid.
- $Br^-$
- Strong acids have insignificant bases as conjugate pair.
- $Br^-$ is the conjugate base of $HBr$, which is a strong acid.
- $Br^-$: Insignificant base.
Therefore: the stronger ion is $N{H_4}$, so, this salt is acidic.
