A-LevelChemistryCarboxylic acids and derivativesMay/June 2025Paper 1 Q341 Mark
Propanoic acid reacts with LiAlH4 to give organic product P. Methanoic acid reacts with organic product P, in the presence of a few drops of concentrated sulfuric acid, to give organic product Q. What are the skeletal formulae of the two organic products?
A[organic product P: skeletal formula of CH3CH2CH2OH, organic product Q: skeletal formula of HCOOCH2CH2CH3]
B[organic product P: skeletal formula of CH3CH2CH2OH, organic product Q: skeletal formula of HCOOCH(CH3)2]
C[organic product P: skeletal formula of CH3CH(OH)CH3, organic product Q: skeletal formula of HCOOCH2CH2CH3]
D[organic product P: skeletal formula of CH3CH(OH)CH3, organic product Q: skeletal formula of HCOOCH(CH3)2]
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of carboxylic acids and derivatives 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...
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