esters
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what are esters
sweet smelling oily liquids used in food flavourings and perfumes
how are esters made
when carboxylic acids and alcohols react to make esters in esterification reactions
functional group of esters
R-COO-R
how is ethyl ethanoate made
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
first part of the name of an ester indicates
the length of the carbon chain in the alcohol
first part of the name ends in
yl
the second part of the name indicates
the length of the carbon chain in the carboxylic acid
the second part of the name ends in
oate