A-LevelChemistryIntroduction to organic chemistryOct/Nov 2023Paper 1 Q311 Mark
The formulae of three compounds are shown. C3H7CHO C2H5COCH3 CH2CHCH2CH2OH Only one of these compounds will decolourise bromine water. Only one of these compounds will produce a silver mirror with Tollens' reagent. Which row shows the correct results?
Adecolourises bromine water: C3H7CHO, forms a silver mirror with Tollens' reagent: C2H5COCH3
Bdecolourises bromine water: C2H5COCH3, forms a silver mirror with Tollens' reagent: C3H7CHO
Cdecolourises bromine water: CH2CHCH2CH2OH, forms a silver mirror with Tollens' reagent: C2H5COCH3
Ddecolourises bromine water: CH2CHCH2CH2OH, forms a silver mirror with Tollens' reagent: C3H7CHO
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The correct answer is D. This question tests the candidate's understanding of introduction to organic chemistry within the Chemistrysyllabus. The examiner's mark scheme requires...
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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...
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