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Which half-reaction correctly represents reduction?(1) Ag --> Ag+ + e–
(2) F2 --> 2 F– + 2e–
(3) Au3+ + 3e–--> Au
(4) Fe2+ + e– --> Fe3+



Answer :

IwAsSoMeGuY
Reduction is the gain of electrons (OILRIG, Oxidisation is Loss, Reduction is Gain)
The only half-reaction showing a gain of electrons is (3) Au3+ + 3e- --> Au

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