What is the product of the electrolysis of aqueous sodium chloride (NaCl) using inert electrodes?

Chemistry

JAMB 2023

A. Hydrogen gas at the cathode and chlorine gas at the anode
B. Hydrogen gas at the cathode and oxygen gas at the anode
C. Sodium metal at the cathode and chlorine gas at the anode
D. Sodium metal at the cathode and oxygen gas at the anode

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Correct Answer: Option B

Explanation

During the electrolysis of aqueous sodium chloride using inert electrodes (such as platinum or carbon), the cations (H\(^+\)) are attracted to the cathode and are reduced to form hydrogen gas (H\(_2\)). The anions (OH\(^-\)) are attracted to the anode and are oxidized to form oxygen gas (O\(_2\)).

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