Practical electrolysis | CPD

Table 1: World production of some chemicals produced by electrolysis
Chemical	Annual world production/tonnes
Aluminium¹	49.3 x 10⁶
Chlorine²	56 x 10⁶
Sodium hydroxide³	66 x 10⁶

Table 2: Practical work required by GCSE specifications
Specification	Practical
AQA GCSE chemistry (8462)	Required practical activity 3 Investigate what happens when aqueous solutions are electrolysed using inert electrodes. This should be an investigation involving developing a hypothesis.
Edexcel GCSE (9–1) Chemistry	Core practical 3.31 Investigate the electrolysis of copper sulfate solution with inert electrodes and copper electrodes
OCR GCSE (9–1) Gateway Chemistry A and Twenty First Century Science Chemistry B	PAG 2 – Electrolysis Example: Electrolysis of aqueous sodium chloride or aqueous copper sulfate solution testing for the gases produced. (A range of practicals are included in the specification and centres can devise their own activity)
WJEC Eduqas GCSE (9–1) Chemistry	Specified practical work SP6B Investigation into electrolysis of aqueous solutions and electroplating