Required Practical: Electrolysis of Aqueous Solutions (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Flashcards

Water produces $H^+$ & $OH^-$ ions that can react

$H^+$ and $OH^-$ ions

The less reactive ion

The ion that oxidises more easily

$Cu^{2+}$ (Cu less reactive than H)

Solid copper deposits

$OH^-$ (no halide ions present)

Oxygen gas and water

$H^+$ (Na more reactive than H)

Hydrogen gas

$Cl^-$ (chloride is a halide ion)

Chlorine gas

$OH^-$ ions, producing oxygen gas