Question

In the electrolysis of brine or concentrated NaCl using graphite electrode,
a.write anodic half equation
b.write cathodic half equation
c.state the effect on electrolyte
please answer correctly.. I need it urgently.. it is due in like 2 hours

Answer 1

Answer:

a) 2Cl⁻ (aq) → Cl₂ (g) + 2e⁻ {anode}

b) 2H⁺ (aq) + 2e⁻ → H₂ (g) {cathode}

c) Chlorine gas is given off at the anode while hydrogen gas is given off at the cathode. The left over ions sodium and hydroxide ions combine to form sodium hydroxide. The solution becomes alkaline.

Explanation: