Question

1. Find the pH of each mixture of acids.

a) 0.150 M HNO3 and 0.375 M HC7H5O2 (benzoic) (Ka HNO3=2.4 * 10¹, Ka HC7H5O2= 6.46 x 10^-5)

b) 0.080 M HBr and 0.045 M HClO4 (Ka HBr=1.0 * 10⁹)

c) 0.125 M HF and 0.325 M HC6H5O (phenol) (Ka HF=6.6 * 10^-4, Ka HC6H5O=1.3 x 10^-10)

d) 0.200 M formic acid and 0.090 M hypochlorous acid (Ka formic acid=1.8 × 10 ⁻⁴, Ka hypochlorous acid=2.9 * 10^-8)

Answer 1