Consider the Dissolution of MnS in Water (K_sp = 3

question 47

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 pK_a of H₂S is needed before a reliable prediction can be made.

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