how do u assemble esters (unit 3 aqa chem)?

  • -2 votes

and carboxacilic acids

Posted Thu 2nd May, 2013 @ 17:42 by Rose

3 Answers

  • 3 votes

Esters are assembled by reacting a carboxylic acid with an alcohol with a concentrated sulfuric acid catalyst. The Alcohol makes up the "yl" bit of the name and the acid makes up the "anoate" bit. E.G. propanoic acid + ethanol ---> ethyl propanoate.

Answered Thu 2nd May, 2013 @ 22:40 by Cesca
  • 1 vote

carboxylic acids are formed by the oxidation of a primary alcohol (an alcohol with the -OH group at the end) this is done using acidified potassium dichromate (K2Cr2O7- represented as [O] ) and heated under reflux.

e.g. propan-1-ol + [O] -----------------> Propanoic acid + Water

        C3H7OH    +2[O]----------------->  C2H5COOH     + H2O

Hope this helps :)

Answered Tue 21st May, 2013 @ 17:00 by sammy
  • -1 votes

carboxylic acids aren't assembled they are just acids that have the functional group -COOH

Answered Sun 19th May, 2013 @ 12:21 by Antonia Loizou