Calculate the `pH` value of :
(i) `0.001` M `HNO_3` ,
(ii) `0.01` M `NaOH`.

Explanation

To calculate the pH values for the given solutions, we will follow these steps:

### (i) Calculation of pH for 0.001 M HNO₃

1. **Identify the nature of the acid**: HNO₃ (Nitric acid) is a strong acid, which means it dissociates completely in solution.

2. **Determine the concentration of H⁺ ions**: Since HNO₃ dissociates completely, the concentration of H⁺ ions will be equal to the concentration of the acid. Therefore, [H⁺] = 0.001 M.

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