What Is the PH of a Solution Made by Mixing $1.8 \times 10^{ - 5}$

Multiple Choice

What is the pH of a solution made by mixing 10.00 mL of 0.10 mol L^-1 acetic acid with 10.00 mL of 0.10 mol L^-1 KOH? Assume that the volumes of the solutions are additive.K_a = $1.8 \times 10^{ - 5}$ for CH₃COOH.

A) 5.28
B) 7.00
C) 8.72
D) 10.02