Question

The redox reaction among the following is :

(1) combination of dinitrogen with dioxygen at 2000K

(2) Formation of ozone from atmosphereic oxygen in the presence of sunlight

(3) Reaction of H₂SO₄ with NaOH

(4) Reaction of [Co(H₂O)₆]Cl₃ with AgNO₃

Answer 1

Answer is (1)

(Redox reaction)

during the reaction, oxidation of nitrogen take place from 0 to 2 and reduction of oxygen take place from 0 to –2. It means this reaction is redox reaction.

Answer 2

Answer is (1) combination of dinitrogen with dioxygen at 2000K