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When molten NaCl

is electrolyzed, the two elements sodium and chlorine are produced at the cathode and anode respectively. In an aqueous solution, however, hydrogen gas is produced at the cathode and oxygen gas at the anode, because these reactions can occur at lower electrode potentials than the production of the elements of NaCl.

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Q: Why are different products obtained when molten and aqueous NaCl are electrolized?
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