6.1.3 carboxylic acids and esters

Question 1

product of the hydrolysis of an ester in hot aqueous acid

Answer 1

carboxylic acid and alcohol

Question 2

product of the hydrolysis of an ester in hot aqueous alkali

Answer 2

carboxylate salts and alcohol

Question 3

conditions for esterification of a carboxylic acid

Answer 3

acid catalyst e.g concentrated H2SO4

Question 4

what is an acid anhydride

Answer 4

-two carboxylic acids, take a H2O out
- ester with =o on both sides

Question 5

what reacts with an acid anhydride to form an ester

Answer 5

alcohol

Question 6

what are acyl chlorides and naming

Answer 6

-carboxylic acid with -oh replaced by -cl
-noyl cholride e.g ethanoyl chloride

Question 7

what are acyl chlorides formed from

Answer 7

SOCl2 and carboxylic acids

Question 8

how do acyl chlorides form carboxylic acids

Answer 8

hydrolysis in water

Question 9

acyl chlorides can be used as a more reactive carboxylic acids, however which esterification can only undergo with acyl chlorides

Answer 9

phenols are not readily esterified by carboxylic acids but are by acyl chlorides.