Determine the Concentration of a Solution of the Weak Acid $\times$

Multiple Choice

Determine the concentration of a solution of the weak acid HClO₂ (K_a = 1.10 $\times$ 10^-2) if it has a pH of 1.075.

A) 0.644 M
B) 0.0841 M
C) 7.65 M
D) 12.9 M
E) 1.287 M