* pH and Acidity: pH measures the acidity or alkalinity of a solution. A lower pH indicates a stronger acid, while a higher pH indicates a weaker acid (or stronger base).
* The Solutions:
* pH 2.4: Very acidic
* pH 5.2: Acidic
* pH 6.4: Slightly acidic
* pH 8.6: Slightly basic
* pH 10.1: Basic
Therefore, the solution with a pH of 10.1 is the weakest acid.
