What will be the resultant pH when 200 ml of an aqueous solution of HCl ( pH = 2.0) is mixed with 300 ml of an aqueous solution of NaOH ( pH = 12.0 ) ?

Explanation

To find the resultant pH when mixing 200 ml of HCl (pH = 2.0) with 300 ml of NaOH (pH = 12.0), we can follow these steps:

### Step 1: Calculate the concentration of H⁺ ions in HCl solution
The pH of the HCl solution is given as 2.0. The concentration of H⁺ ions can be calculated using the formula:
\[ \text{[H⁺]} = 10^{-\text{pH}} = 10^{-2} \text{ M} = 0.01 \text{ M} \]

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