0.1 M of HA is titrated with 0.1 M NaOH, calculate the pH at end point. Given `K_(a)(HA)=5xx10^(-5)` and `alpha lt lt 1`

Explanation

To calculate the pH at the endpoint of the titration of 0.1 M HA with 0.1 M NaOH, we can follow these steps:

### Step 1: Determine the pKa of the weak acid (HA)
Given:
- \( K_a = 5 \times 10^{-5} \)

To find pKa:
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