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Reaction intermediate in a two-step mechanism

This type of question, asked 3 times: 10 May 2024 S1, 12 May 2024 S2, 21 Apr 2025 S1. All 3 questions below, oldest first.

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  1. Question 1

    10 May 2024 S1

    52
    Reaction 3ClO−→ClO3−+2Cl−3\text{ClO}^-\to\text{ClO}_3^-+2\text{Cl}^- in two steps: (i) 2ClO−→ClO2−+Cl−2\text{ClO}^-\to\text{ClO}_2^-+\text{Cl}^-; (ii) ClO2−+ClO−→ClO3−+Cl−\text{ClO}_2^-+\text{ClO}^-\to\text{ClO}_3^-+\text{Cl}^-. Reaction intermediate is

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  2. Question 2

    12 May 2024 S2

    69
    Identify the reaction intermediate of following reaction: (i) 2SO2(g)+2NO2(g)→2SO3(g)+2NO2SO_2(g) + 2NO_2(g) \rightarrow 2SO_3(g) + 2NO; (ii) 2NO(g)+O2(g)→2NO2(g)2NO(g) + O_2(g) \rightarrow 2NO_2(g); overall: 2SO2(g)+O2(g)→2SO3(g)2SO_2(g) + O_2(g) \rightarrow 2SO_3(g)

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  3. Question 3

    21 Apr 2025 S1

    94
    If a reaction occurs in following two steps (i)  2ClO−⟶ClO2−\ 2ClO^{-}\longrightarrow ClO_{2}^{-} (ii)  ClO2−+ClO−⟶ClO3−+Cl−\ ClO_{2}^{-}+ClO^{-}\longrightarrow ClO_{3}^{-}+Cl^{-} Find the reaction intermediate.

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