A-LevelChemistryEquilibriaOct/Nov 2019Paper 1 Q191 Mark
Ammonia, carbon dioxide and water react together to form ammonium carbonate. Which statement about this reaction is correct?
AIt is a redox reaction.
BIt is an acid-base reaction.
CThe H-N-H bond angle decreases as a consequence of this reaction.
DThe three substances react in a 1:1:1 ratio in this reaction.
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of equilibria 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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