Edexcel IGCSE Chemistry Double Award Revision
A guide to the Edexcel IGCSE Chemistry Double Award Syllabus for 2020
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Wednesday, 6 July 2016
5.3 write ionic half-equations for the reactions at the electrodes in aluminium extraction
5.3 •cathode (reduction) = Al3+ +3e- ------> Al
•anode (oxidation) = 2O2-
------> O2 + 4e-
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