(a(i))[2]
Explain why graphite is a good electrical conductor. Use ideas about structure and bonding.
(a(ii))[1]
State one additional property of graphite that makes it suitable for use as an electrode in electrolysis.
(b)[2]
Predict the products formed during the electrolysis of concentrated aqueous copper(II) bromide with graphite electrodes. product at anode product at cathode
(c)[2]
When dilute sulfuric acid is electrolysed using graphite electrodes to make oxygen and hydrogen, construct the ionic half-equation for the reaction at each electrode. reaction at anode reaction at cathode
(d(i))[1]
Name the sole chemical product made in a fuel cell.
(d(ii))[1]
Describe one drawback of using hydrogen-oxygen fuel cells in vehicles compared with gasoline or petrol engines.