Question

The electrolysis of a solution resulted in the formation of H_{2} (g) at the cathode and O_{2} (g) at anode.The solution is ?

Answer 1

The solution is highly concentrated H2So4 (aq) .

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Answer 2

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Electrolysis of Sodium Chloride

Electrolysis of sodium chloride is an important process to manufacture many bulk chemicals of commercial utility, like chlorine, sodium hydroxide etc. Sodium chloride is electrolyzed either in a molten state or in aqueous solutions. Electrolysis is, also done in the presence of additional salts to aid the redox reactions.

Electrolysis of Molten Sodium Chloride

Electrolysis involves the movement of ions to the electrode. Solid-state does not allow the movement of ions and unsuitable for electrolysis. When melted at high temperature, sodium chloride separates into sodium and chloride ions, so that, electrolysis can take place to form sodium atom and chlorine gas.