Question

How will the pH of brine (aq. NaCl solution) be affected when it is electrolysed?

Answer 1

when it will be electrolytes NACL will break and form CL2 at anode and NA will react with H2O and form NAOH near cathode and will form H2 at cathode

Answer 2

Hey !!

Aqueous solution of brine contains Na⁺ , Cl⁻ , H⁺ and OH⁻

2H⁺ + 2e⁻ -----> H₂ (At Cathode)

2Cl⁻ -----> Cl₂ + 2e⁻ (At anode)

The remanining solution contains NaOH, which is a base, therefore pH will increase.

Good luck !!