A weak base, BOH is titrated with a strong acid HA. When 10 ml of HA is added, the pH of the solution is 10.2 and when 25 ml is added, the pH of the solution is 9.1. Calculate the volume of acid that would be required to reach equivalence point.

Explanation

To solve the problem of determining the volume of the strong acid (HA) required to reach the equivalence point when titrating a weak base (BOH), we can follow these steps:

### Step 1: Understand the Titration Process
In a titration of a weak base with a strong acid, the weak base will react with the strong acid to form a conjugate acid. The pH changes as the acid is added, and we are given the pH at two different volumes of added acid.

### Step 2: Calculate the Concentration of [OH⁻] and [H⁺]
Using the pH values provided, we can calculate the concentrations of hydroxide ions ([OH⁻]) and hydrogen ions ([H⁺]) at each stage.

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