Electrolysis practical

Question 1

Method - Copper(II) chloride

Answer 1

Pour approximately 50cm^3 of copper(II) chloride in a beaker.

Place petri dish over beaker. This should have 2 holes.

Insert electrodes into each hole (carbon graphite) - these must not touch

Attach crocodile leads to the rods and connect to 4V power supply and turn on

Negative electrode (cathode) is being coated in copper

Chlorine gas is produced near the anode

Question 2

Method - Sodium Chloride

Answer 2

Pour approximately 50cm^3 of Sodium chloride in a beaker.

Place petri dish over beaker. This should have 2 holes.

Insert electrodes into each hole (carbon graphite) - these must not touch

Attach crocodile leads to the rods and connect to 4V power supply and turn on

Hydrogen gas is being produced at cathode.

Chlorine gas is produced near the anode

Question 3

What is electrolysis

Answer 3

Using electricity to break down ionic compounds