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19 November, 06:04

In the redox reaction below, which is the reducing agent? Cl - Cl2 Mn2 + MnO2

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  1. 19 November, 06:54
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    Cl⁻ is the reducing agent.

    Explanation:

    The redox reaction is as follow:

    MnO₂ + 4H⁺ + 2Cl⁻ → Mn²⁺ + 2H₂O + Cl₂

    One should know the following terms,

    Reducing agent:

    An atom or element which tends to lose electron during a chemical reaction and get itself oxidized. In above reaction Cl⁻ is reducing agent as it carries a negative charge (means it has one extra electron) on the reactant side while, it has zero oxidation state on the product side. It means going from - 1 to 0 the Cl lost one electron hence, it is an reducing agent according to definition.

    Oxidizing Agent:

    On the other hand oxidizing agent is an element or compound which tends to accepts electron (s) and get itself reduced. In above reaction Mn has an oxidation state of + 4 on reactant side and after gaining electron from Cl it has changed to + 2 on the product side. Hence, it has reduced but has oxidized the Cl atom so it is an oxidizing agent according to definition.
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