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The reaction

Cl2 (g) + 2OH– (aq) → ClO– (aq) + Cl– (aq) + H2O (l)

represents the process of bleaching. Identify and name the species that bleaches the substances due to its oxidising action.

0 10 Views | Posted 4 months ago
Asked by Shiksha User

  • 1 Answer

  • A

    Answered by

    alok kumar singh | Contributor-Level 10

    4 months ago

    This is a Short answer type question as classified in NCERT Exemplar

    The given reaction is as below-

    Cl2  (g) +2OH--  (aq)→ClO-- (aq)+ Cl-- (aq) + H2O  (l)

    In the given reaction, oxidation number  of Cl increases from 0 (in Cl2) to +1 (in ClO-) and decreases to -1 (in Cl-). Therefore, Cl2 is both oxidized to ClO- and reduced to Cl-. Since Cl- ion cannot act as an oxidizing agent (because it cannot decrease its O.N. lower than -1), hence, Cl2 bleaches substances due to oxidizing action of hypochlorite, ClO ion.

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