What would be the pH of a solution obtained by mixing 100 ml of 0.1 N HCl and 9.9 ml of 1.0 N NaOH solution ?

Explanation

To find the pH of the solution obtained by mixing 100 ml of 0.1 N HCl and 9.9 ml of 1.0 N NaOH, we can follow these steps:

### Step 1: Calculate the milliequivalents (mEq) of HCl
- **Formula**: mEq = Normality (N) × Volume (L)
- For HCl:
- Normality (N) = 0.1 N
- Volume = 100 ml = 0.1 L
- Calculation:
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