A-LevelChemistryCarboxylic acids and derivativesMay/June 2015Paper 1 Q281 Mark
Lactic acid occurs naturally, for example in sour milk. [Figure] What is a property of lactic acid?
AIt decolourises aqueous bromine rapidly.
BIt is insoluble in water.
CIt reduces Fehling's reagent.
DTwo molecules react with each other in the presence of a strong acid.
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of carboxylic acids and derivatives within the Chemistrysyllabus. The examiner's mark scheme requires...
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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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