Determine Which of the Following Pairs of Reactants Will Result

question 91

Multiple Choice

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

• A)Sn⁴⁺(aq)+ Mg(s); if E^o(Sn⁴⁺/Sn²⁺)= +0.15V and E^o(Mg²⁺/Mg)= -2.37V
• B)Cr³⁺(aq)+ Ni(s); if E^o(Cr³⁺/Cr)= -0.73V and E^o(Ni²⁺/Ni)= -0.23V
• C)Zn(s)+ Na⁺(aq); if E^o(Zn²⁺/Zn)= -0.76V and E^o(Na⁺/Na)= -2.71V
• D)Fe(s)+ Ba²⁺(aq); if E^o(Fe³⁺/Fe)= -0.04V and E^o(Ba²⁺/Ba)= -2.90V
• E)Ni²⁺(aq)+ NO(g); if E^o(Ni²⁺/Ni)= -0.23V and E^o(NO₃^-/NO)= +0.96V

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