`50mL` of `0.05M` Propane `-1,2-`diamine solution is titrated with `0.1M HCl` solution at `25^(@)C`. Detemine the `pH` of solution obtained by adding 50 ml volumes of `HCl` solution.

Explanation

To determine the pH of the solution obtained by adding 50 mL of 0.1 M HCl to 50 mL of 0.05 M propane-1,2-diamine solution, we will follow these steps:

### Step 1: Calculate the number of milliequivalents of propane-1,2-diamine.
- **Given:**
- Volume of propane-1,2-diamine solution = 50 mL
- Molarity of propane-1,2-diamine = 0.05 M
- n-factor of propane-1,2-diamine = 2 (since it has two amine groups)

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