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What is the product of the electrolysis of aque... - JAMB Chemistry 2023 Question

 

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

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

correct option: a

The product of the electrolysis of aqueous sodium chloride (NaCl) using inert electrodes is hydrogen gas (H₂) at the cathode and chlorine gas (Cl₂) at the anode.

The overall reaction can be represented as follows:

\[ 2 \, \text{H}_2\text{O} + 2 \, \text{NaCl} \rightarrow \text{H}_2 \uparrow + \text{Cl}_2 \uparrow + 2 \, \text{NaOH} \]

Hydrogen gas is produced at the cathode, and chlorine gas is produced at the anode.

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