A student set up the apparatus shown below to electrolyse molten lead(II) bromide using inert graphite electrodes.

During this process, the molten lead(II) bromide acts as an electrolyte.
Explain why molten lead(II) bromide is able to act as an electrolyte, whereas solid lead(II) bromide cannot.
Practise Edexcel GCSE Chemistry Electrolytic processes with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.