During the electrolysis of aqueous sodium chloride solution using inert electrodes, which gas is liberated at the anode?

💡 Solution & Explanation

During the electrolysis of brine, chloride ions are oxidized at the anode to produce chlorine gas, while water is reduced at the cathode to produce hydrogen gas. Sodium ions remain in solution alongside hydroxide ions, forming sodium hydroxide. This industrial process is known as the chlor-alkali process.