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What is the final product that zinc forms during the functioning of a mercury cell?(a) ZnO(b) ZnO2(c) Zn(d) Zn(OH)2This question was addressed to me during an interview.I'm obligated to ask this question of Electrochemistry topic in chapter Electrochemistry of Chemistry – Class 12

Answer» CORRECT option is (a) ZnO

The explanation: A mercury cell CONSISTS of a zinc anode and a mercury(II) oxide cathode. Potassium hydroxide is USED as the ELECTROLYTE. In the electrochemical reaction, zinc is oxidised to become zinc oxide(ZnO) whereas mercury(II) oxide is reduced to elemental mercury.


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