# Problem: Fifty milliliters of a 0.10 M aqueous NaOH solution is needed to reach the equivalence point in a titration of a 50. mL sample of benzoic acid (Ka = 6.3 x 10-5). What is the pH of the solution at the equivalence point?A. 5.6B. 7.0C. 8.4D. 10.2E. none of the above

###### FREE Expert Solution

We are being asked to calculate the pH at the equivalence point in the titration benzoic acid with NaOH.

We will calculate the pH of the solution at the equivalence point using the following steps:

Step 1. Write the chemical equation for the reaction between NaOH and BAH (benzoic acid).
Step 2. Calculate the initial amounts of BAH and NaOH in moles before the reaction happens.
Step 3. Construct an ICF Chart.
Step 4. Calculate the new concentration of the species left in the solution.
Step 5. Calculate pH.

98% (323 ratings) ###### Problem Details

Fifty milliliters of a 0.10 M aqueous NaOH solution is needed to reach the equivalence point in a titration of a 50. mL sample of benzoic acid (Ka = 6.3 x 10-5). What is the pH of the solution at the equivalence point?

A. 5.6

B. 7.0

C. 8.4

D. 10.2

E. none of the above