Given the Following Two Half-Reactions,write the Overall Reaction in the Direction

question 20

Multiple Choice

Given the following two half-reactions,write the overall reaction in the direction in which it is spontaneous and calculate the standard cell potential.
Pb²⁺(aq) + 2 e^- $\to$ Pb(s) $~~~~~~~~$$~~~~~~~~$ E ^$\circ$ = -0.126 V
Fe³⁺(aq) + e^- $\to$ Fe²⁺(s) $~~~~~~~~$$~~~~~~~~$ E ^$\circ$ = +0.771 V

• A) Pb²⁺(aq)+ 2 Fe²⁺(s)\(\to\)Pb(s)+ 2 Fe³⁺(aq) = +0.897 V
• B) Pb²⁺(aq)+ Fe²⁺(s)\(\to\) Pb(s)+ Fe³⁺(aq) = +0.645 V
• C) Pb(s)+ 2 Fe³⁺(aq)\(\to\)Pb²⁺(aq)+ 2 Fe²⁺(s) = +1.416 V
• D) Pb(s)+ 2 Fe³⁺(aq)\(\to\) Pb²⁺(aq)+ 2 Fe²⁺(s) = +0.897 V
• E) Pb(s)+ Fe³⁺(aq)\(\to\)Pb²⁺(aq)+ Fe²⁺(s) = +0.645 V

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