Which of the following is NOT an oxidation-reduction reaction?

H_{2} + B r_{2} \to 2 H B r

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N a C l + A g N O_{3} \to N a N O_{3} + A g C l

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2 N a_{2} S_{2} O_{3} + I_{2} \to N a_{2} S_{4} O_{6} + 2 N a I

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C l_{2} + H_{2} O \to H C l + H O C l

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Solution

The correct option is B $N a C l + A g N O_{3} \to N a N O_{3} + A g C l$
In reaction (B), all the species remain in the same oxidation state as none of the species has been oxidised nor reduced. There is only exchange of ions taking place. Hence, this reaction is not an oxidation-reduction reaction.

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Similar questions

C a O C l_{2} + H_{2} O ⟶ C a (O H)_{2} + C l_{2}

2 K I + C l_{2} ⟶ 2 K C l + I_{2}

I_{2} + 2 N a_{2} S_{2} O_{3} ⟶ N a_{2} S_{4} O_{6} + 2 N a I

N a_{2} S_{2} O_{3}

I_{2}

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C a O C l_{2}

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2 N a_{2} S_{2} O_{3} + I_{2} \to N a_{2} S_{4} O_{6} + 2 N a I

2 N a_{2} S_{2} O_{3} + I_{2} = N a_{2} S_{4} O_{6} + 2 N a I, I_{2}

A g N O_{3} + N a B r \to N a N O_{3} + A g B r

B a C l_{2} + H_{2} S O_{4} \to B a S O_{4} + 2 H C l

A g N O_{3} + N a C l \to A g C l + N a N O_{3}

N a O H + H C l \to N a C l + H_{2} O

I_{2} + 2 N a_{2} S_{2} O_{3} \to 2 N a I + N a_{2} S_{4} O_{6}

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