Determine Which of the Following Pairs of Reactants Will Result

question 52

Multiple Choice

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

• A) Pb²⁺(aq) + Cu(s); if E°(Pb²⁺/Pb) = -0.13V and E°(Cu²⁺/Cu) = +0.16V
• B) Ag⁺(aq) + Br⁻(aq); if E°(Ag⁺/Ag) = 0.80V and E°(Br₂/Br^-) = +1.09V
• C) Li⁺(aq) + Al(s); if E°(Li⁺/Li) = -3.04V and E°(Al³⁺/Al) = -1.66V
• D) Fe³⁺(aq) + Ni(s); if E°(Fe³⁺/Fe) = -0.04V and E°(Ni²⁺/Ni) = -0.23V
• E) Cd²⁺(aq) + I^-(aq); if E°(Cd²⁺/Cd) = -0.40V and E°(I₂/I^-) = + 0.54V

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