Answer
$0.0100M$ $HF$ is more acidic.
Work Step by Step
1. Identify each electrolyte:
First solution.
- $HF$: Weak acid.
Second solution.
- $K^+$: Insignificant acid.
- $Br^-$: Insignificant base.
2. Therefore, the more acidic solution is the first one, because it is the only that has an acid.
