JEE Main202331 Jan 2023Morning ShiftChemistryElectrochemistryActual
Which one of the following statements is correct for electrolysis of brine solution?
Options
- ACl 2 is formed at cathode
- BO 2 is formed at cathode
- CH 2 is formed at anode
- DOH - is formed at cathode
Correct answer
D. OH - is formed at cathode
Step-by-step solution
Brine solution is the concentrated solution of NaCl in water. NaCl   ( aq . ) → Na (aq)  + + Cl (aq)  + The cathode will attract the sodium ions from the sodium chloride and hydrogen ions from the water. The hydrogen ions gain 2 electrons and are reduced to form hydrogen molecules. 2 H +   ( aq )   +   2 e -   →   H 2   ( g ) 2 H 2 O   +   2 e −   →   H 2   ( g )   +   2 OH −   ( aq ) The anode will at