Easy MCQ +4 / -1 PYQ · JEE Mains 2023

Which one of the following statements is correct for electrolysis of brine solution?

  1. A $\mathrm{O}_{2}$ is formed at cathode
  2. B $\mathrm{H}_{2}$ is formed at anode
  3. C $\mathrm{Cl}_{2}$ is formed at cathode
  4. D $\mathrm{OH}^{-}$ is formed at cathode Correct answer

Solution

<b>Cathode :</b> $\mathrm{H}_2 \mathrm{O}_{(l)}+e^{-} \longrightarrow \frac{1}{2} \mathrm{H}_{2(g)}+\mathrm{OH}_{(a q)}^{-}$ <br/><br/><b>Anode</b> $: \mathrm{Cl}_{(a q)}^{-} \longrightarrow \frac{1}{2} \mathrm{Cl}_{2(g)}+e^{-}$

About this question

Subject: Chemistry · Chapter: Electrochemistry · Topic: Electrochemical Cells

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