Establish the Ka expression of the dissolution of formic acid (CHO_{2}H) and determine the pH using an ICE chart

We will solve this problem through these steps:

**Step 1:** Write an equation for the dissociation of CHO_{2}H

**Step 2****:** Write an expression for the K_{a}.

**Step 3****:** Set up an ICE table to calculate the H_{3}O^{+} ion concentration.

Calculate the pH of a 0.300 M solution of formic acid, for which the K_{a} value is 1.80 x 10^{-4}.

a. 4.21

b. 2.13

c. 5.77

d. 1.82

e. 1.31