Half Reactions

The two parts of an oxidation-reduction reaction, one representing oxidation, the other reduction.

Ag+ + Cu → Ag + Cu2+

the half reactions are:

Ag+ → Ag

Cu → Cu2+

The silver is being reduced, its oxidation number going from +1 to zero.

The copper′s oxidation number went from zero to +2 and so it was oxidized in the reaction.

See also: Chemical Reaction.

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Subjects: Chemistry