Chemistry · Oct / Nov 2022 · Paper 11 · Question 27

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?

1. Afunctional group –CO2H; moles of fatty acid 1
2. Bfunctional group –CO2H; moles of fatty acid 2
3. Cfunctional group –CH2OH; moles of fatty acid 1
4. Dfunctional group –CH2OH; moles of fatty acid 2

As printed in the paper