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    Reaction with Alkali - Practice Questions & MCQ

    Edited By admin | Updated on Sep 18, 2023 18:35 AM | #JEE Main

    Quick Facts

    • 5 Questions around this concept.

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    QuestionMEDIUM

    Element not present in Nessler’s reagent is

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    Concepts Covered - 0

    Reaction with Alkali
    • Fluorine on reaction with cold or hot alkali releases gases differently.
      \mathrm{2F_{2}\: +\: 2NaOH\: \rightarrow \: 2NaF\: +\: OF_{2}\: +\: H_{2}O}
                   (cold dilute)

      \mathrm{2F_{2}\: +\: 4NaOH\: \rightarrow \: 4NaF\: +\: O_{2}\: +\: 2H_{2}O}
                (hot concentrated)
    • Other halogens form hypohalite with dilute NaOH and halate with conc. NaOH.
      \mathrm{X_{2}(g)\: +\: 2OH^{-}\: \overset{150^{o}C}{\longrightarrow} \: X^{-}\: +\: OX^{-}\: +\: H_{2}O}
                                                         (Hypohalite ion)

      \mathrm{X_{2}(g)\: +\: 6OH^{-}\: \overset{70^{o}C}{\longrightarrow} \: 5X^{-}\: +\: XO^{-}_{3}\: +\: 3H_{2}O}
                                                             (Halate ion)

    Study other Related Concepts

    Reaction with Alkali Current Topic

    Physical Properties of Boron Family
    Anomalous Behaviour of Boron
    Diagonal Relationship of B and Si
    Chemical Properties of Boron Family
    Diborane
    Orthoboric Acid
    Borax Formula
    Group 14 Elements (Carbon Family)
    Allotropes of Carbon
    Carbon monoxide and carbon dioxide

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