Question
Which of the following reactions takes place at anode during the electrolysis of molten NaCl?
Which of the following reactions takes place at anode during the electrolysis of molten NaCl?
D. 2 Cl ^-_ (l) Cl _ 2(g) + 2 e ^-
During the electrolysis of molten NaCl , the ions present are Na ^+ and Cl ^-. At the anode, oxidation takes place. The chloride ions ( Cl ^-) migrate to the anode and lose electrons to form chlorine gas. The reaction at the anode is: 2 Cl ^-_ (l) Cl _ 2(g) + 2 e ^- At the cathode, reduction takes place. The sodium ions ( Na ^+) migrate to the cathode and gain electrons to form liquid sodium. The reaction at the cathode is: Na ^+_ (l) + e ^- Na _ (l) Answer: 2 Cl ^-_ (l) Cl _ 2(g) + 2 e ^-
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