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What is the final product that zinc forms during the functioning of a mercury cell?

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in Chemistry – Class 12 by (188k points)
What is the final product that zinc forms during the functioning of a mercury cell?

(a) ZnO

(b) ZnO2

(c) Zn

(d) Zn(OH)2

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I'm obligated to ask this question of Electrochemistry topic in chapter Electrochemistry of Chemistry – Class 12

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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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