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Which half reaction is most easily reduced?

Ag+ + e− → Ag = 0.80 V

Br2 + 2e− → 2Br− = 1.07 V

Fe3+ + e− → Fe2+ = 0.77 V

Zn2+ + 2e− → Zn = –0.76 V

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Answer;

Br2 + 2e− → 2Br− = 1.07 V

Explanation;

-Oxidation is the loss of electrons while reduction is the gaining of electrons. Reducing agent undergoes oxidation while oxidizing agent undergoes reduction.

- In the above question, bromine is the strongest reducing agent because it has the highest positive value of an emf. Zinc ion on the other hand is the strongest oxidizing agent since it has the highest negative emf.

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