Examine the following reaction(s) and identify which of them are not example(s)of a redox reaction?

Examine the following reaction(s) and identify which of them are not example(s)of a redox reaction?

(i) AgNO3 (aq) + HCl (aq) ⎯⎯→ AgCl (s) + HNO3 (aq)

(ii) MnO2 (s) + 4HCl (aq) ⎯⎯→ MnCl2 (aq) + 2H2O (l) + Cl2 (g)

(iii) 4Na (s) + O2 (g) ⎯⎯→ 2Na2O (s).

Ans: – From the upper reaction we came to this conclusion that the except the first reaction all the other are the example of the redox reaction. As in the first reaction is the displacement reaction so it will not be aredox reaction.

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