Which reaction is NOT a redox reaction? (1) Zn + CuSO4 → ZnSO4 + Cu (2) 2KClO3 + I2 → 2KIO3 + Cl2

Question

Which reaction is NOT a redox reaction?

(1) \(Zn + CuSO_4 \rightarrow ZnSO_4 + Cu\)

(2) \(2KClO_3 + I_2 \rightarrow 2KIO_3 + Cl_2\)

(3) \(H_2 + Cl_2 \rightarrow 2HCl\)

(4) \(BaCl_2 + Na_2SO_4 \rightarrow BaSO_4 + 2NaCl\)

Answer 1

Correct option is (4) \(BaCl_2 + Na_2SO_4 \rightarrow BaSO_4 + 2NaCl\)

(1)  Redox reaction

(2)  Redox reaction

(3)  Redox reaction

(4) \(\overset {+2}{Ba} Cl ^{-1} _2 + \overset {+1}{Na_2}SO^{-2} _4 \rightarrow \overset {+2}{Ba}SO_4 + 2 \overset {+1}{Na} Cl ^{-1}\)

This is not a redox reaction as there is no change in oxidation state.