esters

Question 1

what are esters

Answer 1

sweet smelling oily liquids used in food flavourings and perfumes

Question 2

how are esters made

Answer 2

when carboxylic acids and alcohols react to make esters in esterification reactions

Question 3

functional group of esters

Answer 3

R-COO-R

Question 4

how is ethyl ethanoate made

Answer 4

1- mix ethanol and ethanoic acid in a flask

2- add some drops of concentrated sulfuric acid which acts as a catalyst

3- gently heat the mixture using a water bath or electric heater (not bunsen burner as ethanol is flammable)

4- as mixture is heated, ester forms and evaporates

5- use distillation to collect the ester

6- if it has a sweet, fruity smell then it confirms its an ester

Question 5

first part of the name of an ester indicates

Answer 5

the length of the carbon chain in the alcohol

Question 6

first part of the name ends in

Answer 6

yl

Question 7

the second part of the name indicates

Answer 7

the length of the carbon chain in the carboxylic acid

Question 8

the second part of the name ends in

Answer 8

oate