Advertisements
Advertisements
प्रश्न
Give the electrode reactions of the mercury cell.
लघु उत्तर
Advertisements
उत्तर
At anode: \[\ce{Zn + 2OH- -> ZnO_{(s)} + H2O + 2e-}\]
At cathode: \[\ce{HgO_{(s)} + H2O + 2e- -> Hg_{(l)} + 2OH-}\]
Overall reaction: \[\ce{Zn + HgO_{(s)} -> ZnO_{(s)} + Hg_{(l)}}\]
The anode is made of zinc-mercury amalgam. The cathode is a mixture of carbon and HgO. The cell uses a paste of KOH and ZnO as its electrolyte.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
