Separate: Chemistry and Extended Only
Esters, polyesters and fats all contain the ester linkage.
Esters can be made from alcohols and carboxylic acids. For example, the ester ethyl ethanoate can be made by the following reaction.
CH3COOH + CH3CH2OH → CH3COOCH2CH3 + H2O
i)
Name the carboxylic acid and the alcohol from which the following ester could be made.
[2]
ii)
6.0 g of ethanoic acid, Mr = 60, was reacted with 5.5 g of ethanol, Mr = 46.
Determine which is the limiting reagent and the maximum yield of ethyl ethanoate, Mr = 88.
Number of moles of ethanoic acid =
[1]
Number of moles of ethanol =
[1]
The limiting reagent is
[1]
Number of moles of ethyl ethanoate formed =
[1]
Maximum yield of ethyl ethanoate =
[1]