A-LevelChemistryAtoms, molecules and stoichiometryFeb/Mar 2022Paper 1 Q311 Mark
A sample of 2.30 g of ethanol is mixed with an excess of aqueous acidified potassium dichromate(VI). The reaction mixture is boiled under reflux for one hour. The required organic product is then collected by distillation. The yield of product is 60.0%. Which mass of product is collected?
A1.32 g
B1.38 g
C1.80 g
D3.00 g
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of atoms, molecules and stoichiometry 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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