O-LevelChemistryOrganic Chemistry5070/11 · Oct/Nov 2022 · Q271 Mark

Some medicines contain the magnesium salt of a fatty acid. The fatty acids are members of the homologous series of carboxylic acids and contain one carboxylic acid group. What is the carboxylic acid functional group and how many moles of a fatty acid react with one mole of magnesium?

A-CO2H 1

B-CO2H 2

C-CH2OH 1

D-CH2OH 2

✓ Correct answer

B: -CO2H 2

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Topic: Organic Chemistry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2022 Paper 1 Variant 1, question 27.

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