(a(i))[3]
The apparatus is only partly drawn. Finish the diagram by labelling the anode and cathode, adding the connecting wires, and showing how the gases are collected.
(a(ii))[2]
Name the substances formed at each electrode.
(b)[2]
Carbon dioxide is formed when sulfuric acid reacts with sodium carbonate. Name the two other substances that are produced.
(c)[2]
Describe the test for carbon dioxide.
(d)[1]
Carbon dioxide is a greenhouse gas. State one environmental effect of greenhouse gases.