Explain the required practical: Electrolysis of aqueous solutions - Sodium Chloride

1) Pour 50cm3 of sodium chloride solution into beaker 2) Turn on low voltage power supply 3) Anode: bubbles of gas produced which bleach damp blue litmus paper - chlorine, because chlorine is a halide ion, it is discharged at the anode 4) Cathode: bubbles of gas produced - hydrogen, hydrogen is discharged at the cathode as it is less reactive than sodium 5) We can prove hydrogen is produced at the cathode by collecting it then testing it with a lit splint, it'll produce a squeaky pop