Calculate the pH of a solution that contains 16.4 mL of 1.0 M NaCN, 29.5 mL of 1.0 M HCN, and 7.7 mL of 1.0 M NaOH. Ka for HCN is 6.2 × 10⁻¹⁰.
a. 9.52
b. 10.26
c. 11.04
d. 12.18