Question

What is the pH of a buffer solution that is composed of a weak acid, HA (K_a=6.92×10^–8), and the conjugate base, A^–, after 1.7 mL of 0.101 M NaOH solution is added. The initial concentrations of the 144 mL buffer solution are [HA]=0.35 M and [A^–]=0.32 M. Enter your value to two (2) decimal places.

Answer 1