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Explain synthesis resin method for removing …

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Explain synthesis resin method for removing permanent hardness of water

    • Posted by Šïmmï Vërmä 6 years, 11 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Yogita Ingle 6 years, 11 months ago

    Synthetic resins method is a method used for removing permanent hardness of water. In this method ion exchange resins (RSO3H) is changed to RNa by treating it with NaCl. Then, RNa exchanges Na+  ions with Ca2+  and Mg2+  ions present in hard water and as a result, hard water is softened.
    2RNa (s) + Mg2+(aq) → R2M(s) + 2 Na+(aq)

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