AP EAMCET · Chemistry · Electrochemistry
The electrolyte used in mercury cell is
- A Moist paste of \(\mathrm{NH}_4 \mathrm{Cl}\) and \(\mathrm{ZnCl}_2\)
- B \(38 \%\) solution of \(\mathrm{H}_2 \mathrm{SO}_4\)
- C Paste of \(\mathrm{KOH}\) and \(\mathrm{ZnO}\)
- D Paste of \(\mathrm{MgCl}_2\) and \(\mathrm{HgO}\)
Answer & Solution
Correct Answer
(C) Paste of \(\mathrm{KOH}\) and \(\mathrm{ZnO}\)
Step-by-step Solution
Detailed explanation
Mercury cell uses a paste of \(\mathrm{KOH}\) and \(\mathrm{ZnO}\). Anode \(=\mathrm{Zn}-\mathrm{Hg}\) amalgam Cathode \(=\mathrm{HgO}+\mathrm{C}\) paste.
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