(a)[1]
Name the apparatus labelled X.
(b)[1]
Give a reason why iron electrodes are unsuitable for use in this electrolysis.
(c)[2]
Chlorine gas is formed at the anode during this electrolysis. Describe and explain one safety precaution the student takes during this electrolysis.
(d)[2]
Another gas is produced at the cathode during this electrolysis. Name the gas produced. Describe a test and its result to confirm the identity of the gas.