Which of the following is released at cathode during electrolysis of aqueous sodium chloride?

Which of the following is released at cathode during electrolysis of aqueous sodium chloride?
  1. $\mathrm{Cl}_{2(\mathrm{~g})}$
  2. $\mathrm{Na}_{(\mathrm{s})}$
  3. $\mathrm{O}_{2(\mathrm{~g})}$
  4. $\mathrm{H}_{2(\mathrm{~g})}$

Solution

At cathode : $2 \mathrm{H}_2 \mathrm{O}_{(1)}+2 \mathrm{e}^{-} \rightarrow \mathrm{H}_{2(\mathrm{~g})}+2 \mathrm{OH}_{(\mathrm{aq})}$

Asked in: MHT CET 2024 (10 May Shift 2)

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