In electrolysis of NaCl, when Pt electrode is taken then, H 2 is liberated at cathode…
Chemistry · NEET · NTA Exams — Electrochemistry
In electrolysis of NaCl, when Pt electrode is taken then, H2 is liberated at cathode, while with Hg cathode it forms sodium amalgam:
- Hg is more inert than Pt.
- more voltage is required to reduce H+ at Hg than at Pt.
- Na is dissolved in Hg while it does not dissolved in Pt.
- concentration of H+ ions is larger when Pt electrode is taken.
Answer
(B) more voltage is required to reduce H + at Hg than at Pt.
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