Calculate the pH of a 0.001 M solution of `Ba(OH)_2` assuming it to be completely ionised .

Explanation

To calculate the pH of a 0.001 M solution of Ba(OH)₂, we will follow these steps:

### Step 1: Write the dissociation equation
Barium hydroxide, Ba(OH)₂, dissociates completely in water as follows:
\[ \text{Ba(OH)}_2 \rightarrow \text{Ba}^{2+} + 2 \text{OH}^- \]

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