Assuming 0. 1 M concentrations, arrange the following acid solutions in order of increasing pH.
Benzoic acid, HC7H5O2, Ka = 6. 3 × 10⁻⁵
Chlorous acid, HClO2, Ka = 1. 1 × 10⁻²
Formic acid, HCHO2, Ka = 1. 8 × 10⁻⁴
Hydrofluoric acid, HF, Ka = 6. 8 × 10⁻⁴