Question

Co(s) + Cu²⁺ (aq)⟶Co²⁺ (aq) + Cu(s)
The above reaction is :
(a) Oxidation reaction
(b) Reduction reaction
(c) Redox reaction
(d) None of these

Answer 1

(c) Redox reaction

Explanation:

An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.

Co(s) + Cu²⁺ (aq) -----> Co²⁺ (aq) + Cu(s)

This is a redox reaction as it involves both oxidation and reduction.

Co loses electrons and gets oxidized. This is oxidation reaction.

Cu2+ gains electrons and get reduced. This is reduction reaction.

Option C is the answer.