A-LevelChemistryIntroduction to organic chemistryOct/Nov 2017Paper 1 Q211 Mark
The diagram shows the skeletal formula of citric acid. [Figure 21.1 - skeletal formula of citric acid] What is the molecular formula of citric acid?
AC6H8O7
BC6H4O7
CC8H8O7
DC10H8O7
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The correct answer is A. This question tests the candidate's understanding of introduction to organic chemistry 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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