Electrochemical Cell Potentials Can Be Used to Determine Equilibrium Constants $\to$

question 50

Multiple Choice

Electrochemical cell potentials can be used to determine equilibrium constants that would be otherwise difficult to determine because concentrations are small.Calculate the value of K_sp for CdS from the following data.
CdS(s) + 2 e^- $\to$ Cd(s) + S^2-(aq)
E° = -1.21 V
Cd²⁺(aq) + 2 e^- $\to$ Cd(s)
E° = -0.40 V

• A)4.06 \(\times\) 10^-55
• B)4.32 \(\times\)10^-28
• C)2.08 \(\times\)10^-14
• D)2.31 \(\times\) 10²⁷
• E)2.47 \(\times\) 10⁵⁴

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