Question

0.144 mol/L in formic acid (Ka = 1.8 × 10⁻⁴) and 0.043 mol/L in hypochlorous acid (Ka = 4.0 × 10⁻⁸). Express your answer to two decimal places. pH=

a) 2.34
b) 3.21
c) 4.12
d) 5.67