Esters

esters can often be found in perfume

​When an alcohol reacts with a carboxylic acid an ester is formed.  A water molecule is also produced in this process. This is an example of a condensation reaction. 

Esters of low molecular weight are often used as fragrances and are found in essential oils.

 Students should:

Carboxylic acids have a functional group which can be represented as  -CO2H . If attached to an alkyl group (R) this becomes R-CO2H. The alcohol functional group is  - OH. If attached to an alkyl group (R') this becomes R' - OH

When these two functional groups react together with the loss of a water molecule the result is an ester 

an ester with formula R-CO2R'

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