College Chemistry Quiz
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THERMODYNAMICS & ELECTROCHEMISTRY
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For the dissolution equilibrium CuS(s)⇌Cu2+(aq)+S2−(aq)\text{CuS(s)} \rightleftharpoons \text{Cu}^{2+}(\text{aq}) + \text{S}^{2-}(\text{aq}) at 25°C, Ksp=1.3×10−36K_{sp} = 1.3 \times 10^{-36}. Calculate the minimum concentration of Cu2+\text{Cu}^{2+} ions needed in solution to prevent dissolution of solid CuS when [S²⁻] = 1.0×10−121.0 \times 10^{-12} M.
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