A-LevelChemistryHydroxy compoundsOct/Nov 2019Paper 1 Q241 Mark
Propan-1-ol can be reacted with acidified potassium dichromate(VI) to form propanoic acid, reaction 1, or propanal, reaction 2. [Figure 24.1] How can the reaction be carried out to ensure that reaction 2 occurs rather than reaction 1?
AAn excess of acidified potassium dichromate(VI) is used.
BAn excess of concentrated sulfuric acid is added.
CThe reaction mixture is distilled immediately after mixing.
DThe reaction mixture is heated under reflux.
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of hydroxy compounds 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