cis-but-2-ene reacts with cold dilute acidified potassium manganate(VII) solution to give product X. cis-but-2-ene reacts with hot concentrated acidified potassium manganate(VII) solution to give product Y. Which row describing the reactions of X and Y is correct? [Table 30.1: Reactions of X and Y]
✓ Correct Answer
The correct answer is B: when sodium metal is added to separate samples of X and Y both X and Y will react when sodium hydroxide solution is added to separate samples of X and Y only one of X and Y will react
📋 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...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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