What is the `pH` at which `0.01MCo^(2+)` ions in solution precipiate down as `Co(OH)_(2)? K_(sp)` of `Co(OH)_(2)` is `2.5 xx 10^(-16)`.

Explanation

To find the pH at which \(0.01 \, M \, Co^{2+}\) ions in solution precipitate as \(Co(OH)_2\), we will follow these steps:

### Step 1: Write the dissociation equation for \(Co(OH)_2\)
The dissociation of \(Co(OH)_2\) can be represented as:
\[ Co(OH)_2 (s) \rightleftharpoons Co^{2+} (aq) + 2OH^{-} (aq) \]

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