Which reaction is NOT a redox reaction?
- $2 \mathrm{KClO}_3+\mathrm{I}_2 \rightarrow 2 \mathrm{KIO}_3+\mathrm{Cl}_2$
- $\mathrm{H}_2+\mathrm{Cl}_2 \rightarrow 2 \mathrm{HCl}$
- $\mathrm{BaCl}_2+\mathrm{Na}_2 \mathrm{SO}_4 \rightarrow \mathrm{BaSO}_4+2 \mathrm{NaCl}$
- $\mathrm{Zn}+\mathrm{CuSO}_4 \rightarrow \mathrm{ZnSO}_4+\mathrm{Cu}$
Solution
(3) $\mathrm{BaCl}_2^{-1}+\mathrm{Na}_2^{+1} \mathrm{SO}_4^{-2} \longrightarrow \stackrel{+2}{\mathrm{BaSO}_4+2 \mathrm{NaCl}^{-1}}$ This is not a redox reaction as there is no change in oxidation state.
Asked in: NEET 2024