A) aqueous solution of sodium chloride with platinum electrodes
B) molten sodium chloride with graphite anode and iron cathodes
C) sodium carbonate with platinum electrodes
D) sodium carbonate with nickel electrodes
Correct Answer: A
Solution :
[a] At anode: \[2C{{l}^{-}}\to C{{l}_{2}}+2e\] At cathode: \[2{{H}^{+}}+2{{e}^{-}}\to {{H}_{2}}\]
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