Q 2657601584.     An aqueous solution of `NaCl` on electrolysis gives `H_2 (g), Cl_2 (g)` and `NaOH` according to the reaction.
`2Cl^(-) (aq) + 2H_2O ⇌ 2OH^(-) (aq) + H_2 (g) + Cl_2 (g)`
A direct current of `25 A` with a current efficiency of `62%` is passed through `20` L of `NaCl` solution (`20%` by weight).
Write down the reactions taking place at the anode and cathode. How long will it take to produce `1` kg of `Cl_2`? What will be the molarity of the solution with respect to hydroxide ion? (Assume no loss due to evaporation)

JEE 1992

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