Calculate the pH value of the solution in which the concentration of `OH^(-) " ions is " 5.0 xx 10^(-9) " mol " L^(-1) at 298 K`

Explanation

To calculate the pH of a solution where the concentration of OH⁻ ions is \(5.0 \times 10^{-9} \, \text{mol L}^{-1}\) at 298 K, we can follow these steps:

### Step 1: Understand the relationship between pH and pOH
We know that:
\[ \text{pH} + \text{pOH} = 14 \]
This relationship is crucial for calculating the pH when we have the concentration of OH⁻ ions.
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