A-LevelChemistryReaction kineticsMay/June 2024Paper 4 Q58 Marks
In aqueous solution, persulfate ions, S₂O₈²⁻, react with iodide ions, as shown in reaction 1. reaction 1 S₂O₈²⁻ + 2I⁻ → 2SO₄²⁻ + I₂ The rate of reaction 1 is investigated. A sample of S₂O₈²⁻ is mixed with a large excess of iodide ions of known concentration. The graph in Fig. 5.1 shows the results obtained. [Figure 5.1]
✓ Correct Answer
The correct answer is —. This question tests the candidate's understanding of reaction kinetics within the Chemistrysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🔒
Unlock the Examiner's Answer
Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep