Exhibit 18-3 Use the Standard Reduction Potentials Below to Answer

question 105

Multiple Choice

Exhibit 18-3 Use the standard reduction potentials below to answer the following question(s) .
Ce⁴⁺(aq) + e ^- →Ce³⁺(aq) E ° = 1.61 V
Fe³⁺(aq) + e ^- →Fe²⁺(aq) E ° = 0.77 V
I₂(s) + 2 e ^- →2 I ^- (aq) E ° = 0.54 V
2 H⁺(aq) + 2 e ^- →H₂(g) E ° = 0.000 V
Cd²⁺(aq) + 2 e ^- →Cd(s) E ° = - 0.40 V
U⁴⁺(aq) + e ^- →U³⁺(aq) E ° = - 0.61 V
CdCO₃(s) + 2 e ^- →Cd(s) + CO₃^{2 -} (aq) E ° = - 0.74 V
Zn²⁺(aq) + 2 e ^- →Zn(s) E ° = - 0.76 V
U³⁺(aq) + 3 e ^- →U(s) E ° = - 1.80 V
Mg²⁺(aq) + 2 e ^- →Mg(s) E ° = - 2.37 V
-
Refer to Exhibit 18-3. The strongest reducing agent in this series is:

• A) Mg²⁺
• B) Mg (s)
• C) Ce⁴⁺
• D) Ce³⁺
• E) none of these

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