Calculate the Percent Ionization of Formic Acid (HCO₂H)in a Solution

Multiple Choice

Calculate the percent ionization of formic acid (HCO₂H) in a solution that is 0.322 M in formic acid and 0.178 M in sodium formate (NaHCO₂) . The K_a of formic acid is 1.77 × 10^-4.

A) 35.6
B) 0.1011
C) 10.8
D) 1.03 × 10^-3
E) 3.488