Chemistry
Define a redox reaction. Give an equation and in it indicate the substance being oxidised and the substance being reduced.
Chemical Reaction
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Answer
A chemical reaction which involves, oxidation of one substance and reduction of other substance is called a Redox Reaction.
Considering the reaction of Zinc with copper sulphate:
Zn + CuSO4 ⟶ ZnSO4 + Cu
Zn + Cu2+SO42- ⟶ Zn2+SO42- + Cu
Here, Zinc is oxidised and Copper is reduced.
Oxidation — Zn - 2e- ⟶ Zn2+
Reduction — Cu2+ + 2e- ⟶ Cu
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