The concentration of `Ni^(+2)` ions in a given `NiS` solution is `2.0 xx 10^(-6)M`. Find the minimum `S^(2-)` ions necessary to cause precipitation of `NiS. K_(sp)` of `NiS = 1.4 xx 10^(-14)`.

Explanation

To solve the problem of finding the minimum concentration of \( S^{2-} \) ions necessary to cause precipitation of \( NiS \), we can follow these steps:

### Step 1: Understand the Ksp Expression
The solubility product constant (\( K_{sp} \)) for the salt \( NiS \) can be expressed as:
\[ K_{sp} = [Ni^{2+}][S^{2-}] \]
where:
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