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     EduGorilla 
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    In electrolysis of NaCl, when Pt electrode is taken, H2 is liberated at cathode, while with Hg cathode, it forms sodium amalgam. Give the correct reason.

    Options :-

    1. Hg is more inert than Pt.
    2. More voltage is required to reduce H+ at Hg than at Pt.
    3. Na is dissolved in Hg, while it does not dissolve in Pt.
    4. Concentration of H+ ions is larger when Pt electrode is taken.
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