KCET2023ChemistryElectrochemistry
During the electrolysis of brine, by using inert electrodes,
Options
- AO ₂ liberates at anode
- BH ₂ liberates at anode
- CNa deposits on cathode
- DCl ₂ liberates at anode
Correct answer
D. Cl ₂ liberates at anode
Step-by-step solution
During electrolysis of brine using inert electrodes. At anode : 2 Cl ⁻ Cl ₂+2 e⁻ At cathode : 2 H ₂ O +2 e⁻ H ₂+2 OH ⁻ Overall, 2 NaCl +2 H ₂ O Cl ₂+ H ₂+2 NaOH i.e. Cl ₂ is produced at anode while H ₂ is produced at cathode.