Problem: Calculate the pH of a 0.400 M solution of hypochlorous acid, for which the Ka value is 2.90 x 10-8. Enter your answer with two decimal places.a. 3.97b. 4.22c. 4.78d. 4.92e. 6.22

FREE Expert Solution

Establish the Ka expression of the dissolution of hypochlorous acid (HOCl) 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 HOCl

Step 2: Write an expression for the Ka.

Step 3: Set up an ICE table to calculate the H3O+ ion concentration.

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Problem Details

Calculate the pH of a 0.400 M solution of hypochlorous acid, for which the Ka value is 2.90 x 10-8. Enter your answer with two decimal places.

a. 3.97

b. 4.22

c. 4.78

d. 4.92

e. 6.22