Question

write briefly about the three methods of electrolysis of sodium chloride.
FROM 9TH STD. (MSCERT) Chp Substances in common use

Answer 1

three method of electrolysis of sodium chloride

1) by passing electric current

NaCl---------> NaOH+H2+Cl2
electrolysis

there is only one method of electrolysis

but there multiple reactions of Decomposition of sodium chloride

Answer 2

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Electrolysis➫ The producing of chemical changes by passage of an electric current through an electrolyte. 

➧The three methods of electrolysis of sodium chloride are:

[1] Dilute aqueous sodium chloride solution produces hydrogen at the cathode & oxygen at the anode.

[2] Concentrated aqueous sodium chloride solution produces hydrogen at the cathode & chlorine at the anode.

[3] Aqueous solutions of intermediate concentrations may produce both chlorine & oxygen at the anode.

❱ Electrolysis is commercially important as a stage in the separation of elements from naturally occurring sources such as ores using an electrolytic cell.

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