If a reaction occurs in following two steps i) 2 ClO − → ClO 2 − ii) ClO 2 − + ClO − → ClO 3 − + Cl − Find the reaction intermediate.

Question

If a reaction occurs in following two steps i) 2 ClO − → ClO 2 − ​ ii) ClO 2 − ​ + ClO − → ClO 3 − ​ + Cl − Find the reaction intermediate.

TestHub · Accepted Answer

A reaction intermediate is a chemical species that is formed in one elementary step and consumed in a subsequent step of a reaction mechanism.

In the given mechanism:
Step i) $2 ClO^{-} \to ClO_{2}^{-}$ (Formation of $ClO_{2}^{-}$ )
Step ii) $ClO_{2}^{-} + ClO^{-} \to ClO_{3}^{-} + Cl^{-}$ (Consumption of $ClO_{2}^{-}$ )

Since $ClO_{2}^{-}$ is produced in the first step and consumed in the second step, it does not appear in the overall balanced chemical equation ( $3 ClO^{-} \to ClO_{3}^{-} + Cl^{-}$ ).

Therefore, $ClO_{2}^{-}$ is the reaction intermediate.

Answer: $ClO_{2}^{-}$

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