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 0.219 M in formic acid. The K_a of formic acid is 1.77 × 10^-4.

A) 3.94 × 10^-5
B) 0.0180
C) 2.84
D) 0.280
E) 12.2