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Bleaching of flowers by chlorine is …

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Bleaching of flowers by chlorine is permanent while that by sulphur dioxide is temporary. Why?

    • Posted by Lokesh Ramadas 7 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Sanskriti S 7 years, 1 month ago

    bleaching action of SO2 is due to reduction(nascent [H]). When the bleached substance is exposed to air(O2), it again gets oxidised, ie, coloured. Whereas bleaching action of Cl2 is due to oxidation([O]), which cannot be reversed in presence of air.

    3Thank You

    Suraj Choudhary 7 years, 1 month ago

    Because when chlorine is treated with water it produces nascent oxygen which combines with colour substance and then oxide into colourless substance this property doesn't hold for Sulphur Dioxide that's why bleaching of flower by chlorine is permanent while then by Sulphur dioxide is temporary

    0Thank You

    Gaurav Sharma 7 years, 1 month ago

    What do you mean by flower

    2Thank You

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