Exam-style question
Try this first
Chemical changes case 089 redox-boundary. A student explains a redox change. Which option uses the safest chemistry wording? Focus on Write half equations for reactions the cathode electrolysis in Representation of reactions at electrodes as half equations (HT only), not on a neighbouring Unit 4.4 reaction idea.
- A.Chemical changes case 089 redox-boundary: Links oxidation or reduction to the correct electron or oxygen change for Write half equations for reactions the cathode electrolysis
- B.Chemical changes case 089 redox-boundary: Uses reduction and displacement as if they mean the same thing (Representation of reactions at electrodes as half equations (HT only))
- C.Chemical changes case 089 redox-boundary: Calls the reaction redox without naming what changes (Write half equations for reactions the cathode electrolysis)
- D.Chemical changes case 089 redox-boundary: Confuses oxidation state with ionic charge in the answer (Electrolysis)
Answer and explanation
Attempt the question first, then reveal the model answer and explanation.
Common mistake
No common mistake is linked to this question yet.
