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Question
Correct statement about electrolysis of aqueous NaCl is:
Options
H2 gas liberated at cathode.
Cl2 gas liberated at cathode.
H2 gas liberated at anode.
O2 gas liberated at anode.
MCQ
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Solution
H2 gas liberated at cathode.
Explanation:
In electrolysis of aqueous NaCl (brine), at the cathode (reduction), water is reduced to liberate H2 gas. At the anode, Cl− is oxidised to Cl2 gas. H2 is liberated at the cathode, not at the anode.
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