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What is the product formed at the cathode in the electrolysis of molten NaCl?

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in Chemistry – Class 12 by (188k points)
What is the product formed at the cathode in the electrolysis of molten NaCl?

(a) Chlorine gas

(b) Sodium metal

(c) Hydrogen gas

(d) Oxygen gas

The question was asked in a national level competition.

The doubt is from Electrolytic Cells and Electrolysis in division Electrochemistry of Chemistry – Class 12

1 Answer

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Correct answer is (b) Sodium metal

Explanation: In the electrolysis of NaCl, if the electrolyte is molten NaCl, then the only ions formed after dissociation are Na^+ and Cl^– ions. The cathode being a negatively charged electrode attracts the positive Na^+ ions and neutralizes it to form Sodium metal.

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