A-LevelChemistryAnalytical techniquesOct/Nov 2020Paper 4 Q99 Marks
The proton NMR spectrum of compound E in the solvent CDCl3 is shown. The molecular formula of compound E is C9H10O2. [Figure of proton NMR spectrum, with relative integral values of 3, 2, 2, and 5 for peaks from right to left (low to high δ) respectively. Small peak at δ=0 is TMS.]
✓ Correct Answer
The correct answer is —. This question tests the candidate's understanding of analytical techniques 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