Determine Which of the Following Pairs of Reactants Will Result

Determine which of the following pairs of reactants will result in a spontaneous reaction at 25 °C.

A) I^-(aq) + Zn²⁺(aq) ; if E°(I₂/I^-) = + 0.54V and E°(Zn²⁺/Zn) = -0.76V
B) Ca(s) + Mg²⁺(aq) ; if E°(Ca²⁺/Ca) = -2.76V and E°(Mg²⁺/Mg) = -2.37V
C) H₂(g) + Cd²⁺(aq) ; if E°(Cd²⁺/Cd) = -0.40V
D) Ag(s) + Sn²⁺(aq) ; if E°(Ag⁺/Ag) = + 0.80V and E°(Sn²⁺/Sn) = -0.14V
E) Ag⁺(aq) + Mn²⁺(aq) ; if E°(Ag⁺/Ag) = + 0.80V and E°(MnO₄^-/Mn²⁺) = +1.51V

Correct Answer:

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