Consider the Dissolution of MnS in Water (K_sp = 3

question 20

Multiple Choice

Consider the dissolution of MnS in water (K_sp = 3.0 × 10⁻¹⁴) . MnS(s) + H₂O(l) ⇄ Mn²⁺(aq) + HS⁻(aq) + OH⁻(aq)
How is the solubility of manganese(II) sulfide affected by the addition of aqueous potassium hydroxide to the system?

• A)The solubility will be unchanged.
• B)The solubility will decrease.
• C)The solubility will increase.
• D)The amount of KOH added must be known before its effect can be predicted.
• E)The p K _a of H ₂S is needed before a reliable prediction can be made.

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