Correct Answer: Option A

Explanation

In the electrolysis of dilute hydrochloric acid (HCl), two anions are present at the anode: chloride ions(Cl\(^-\)) and hydroxide ions (OH\(^-\)) from water. According to the electrochemical series, hydroxide ions are more easily discharged than chloride ions when the solution is dilute. Therefore, the (OH\(^-\)) ions undergo oxidation to produce oxygen gas (O\(_2\)) and water.

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