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A-LevelChemistryCarboxylic acids and derivativesOct/Nov 2010Paper 1 Q241 Mark

Esters are frequently used as solvents and as flavouring agents in fruit drinks and confectionery. An ester C₈H₁₂Br₂O₄ can be prepared in low yield by the reaction shown. CH₃C(Br)(CH₂Br)CO₂H + (CH₃)₂C(OH)CO₂H = C₈H₁₂Br₂O₄ + H₂O What is the structural formula of the ester C₈H₁₂Br₂O₄?

ACH₃C(Br)(CH₂Br)CO₂C(CH₃)₂CO₂H
BCH₃C(Br)(CH₂Br)CO₂C(OH)(CH₃)CO₂CH₃
CCH₃C(Br)(CH₃)CO₂C(CH₃)₂CO₂CH₂Br
D(CH₃)₂C(Br)C(CO₂H)(CH₂Br)CO₂CH₃

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The correct answer is A. 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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About This A-Level Chemistry Question

This multiple-choice question appeared in the Cambridge A-Level Chemistry (9701) Oct/Nov 2010 examination, Paper 1 Variant 2. It tests the topic of Carboxylic acids and derivatives and is worth 1 mark.

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