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

question 2

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) + 2e F^- $\rightarrow$ Cd(s) +S^{2 -}(aq) $\quad$$\quad$ E ° = -1.21 V
Cd^{2 +}(aq) +2e^- $\rightarrow$ Cd(s) $\quad$$\quad$$\quad$$\quad$$\quad$ E ° =-0.40 V

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

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