Given the Standard Reduction Potentials

question 1

Multiple Choice

Given the standard reduction potentials:
Cd²⁺ (aq) + 2 e ^- →Cd (s) E ° = - 0.40 V CdCO₃ (s) + 2 e ^- →Cd (s) + CO₃^{2 -} (aq) E ° = - 0.74 V What is the solubility product of CdCO₃ (s) ?

• A) 3×10 ^{- 12}
• B) 2×10 ^{- 6}
• C) 11.5
• D) 5×10⁵
• E) none of these

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