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4.3.5 Representation of reactions at electrodes as half equations (HT only)
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What half equations show

What half equations show

A half equation shows the electrons lost or gained by one species in a redox reaction. During electrolysis, reduction happens at the cathode because positive ions gain electrons, while oxidation happens at the anode because negative ions lose electrons.

4.3.5 Representation of reactions at electrodes as half equations (HT only) Lesson

  1. GCSE
  2. /Chemistry
  3. /4.3.5 Representation of reactions at electrodes as half equations (HT only)

Step-by-step lessons on AQA GCSE Chemistry 4.3.5 Representation of reactions at electrodes as half equations (HT only). Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.

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