Chemistry: Electrolysis
Topic overview
Electrolytes, reactions at the anode and cathode, electrolysis of molten salts and aqueous solutions, aluminium extraction and electroplating (official C12)
Key concepts
The five modules are verified separately. Math 1 contains no calculus; Math 2 does not require complex numbers, matrices or general differential equations. Each combination reuses module questions and shares them with the special-topic practice; it is for scope-restricted training only and does not represent unseen questions, complete coverage or official difficulty. Please choose modules according to the course you are applying for.
Key points
- ◆Follow the prerequisite knowledge requirements given by the examination body; new concepts may only be used when the question provides sufficient guidance.
- ◆The examples on this site are training with a limited scope and do not represent full syllabus coverage or official difficulty.
Worked examples
Try each example yourself before checking the explanation.
During electrolysis of molten sodium chloride, what happens at the negative cathode?
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