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What does the reaction profile look like for an endothermic reaction?
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- QUESTION:A voltaic cell consisting of zinc and iron electrodes has this cell notation.Zn (s) | Zn2+ (aq) || Fe2+ (aq) | Fe (s)Identify the choice that correctly shows the reaction occurring at the anode as well as the overall reaction.ANSWER OPTIONS:[A] : The reaction occurring at the anode is Zn2+ (aq) + 2e− → Zn (s). The overall reaction is Zn (s) + Fe2+(aq) → Fe (s) + Zn2+ (aq).[B] : The reaction occurring at the anode is Fe2+ (aq) + 2e− → Fe (s). The overall reaction is Zn (s) + Fe2+(aq) → Fe (s) + Zn2+ (aq).[C] : The reaction occurring at the anode is Zn (s) → Zn2+ (aq) + 2e−. The overall reaction is Zn (s) + Fe2+(aq) → Fe (s) + Zn2+ (aq).[D] : The reaction occurring at the anode is Fe (s) → Fe2+ (aq) + 2e−. The overall reaction is Fe (s) + Zn2+(aq) → Zn (s) + Fe2+ (aq).
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