Esters

Question 1

What are the 3 ways to make an ester?

Answer 1

Carboxylic acid + alcohol -> Ester + water
Acyl chloride + alcohol -> Ester
Acid anhydride + alcohol -> Ester + carboxylic acid

Question 2

What the reagent and conditions when making an ester?

Answer 2

Conc H2SO4

H.U.R

Question 3

How do you name esters?

Answer 3

-O is the start of name = chain with yl
=O is end of name = chain with anoate
Eg Methyl propanoate

Question 4

Why should you use a symmetrical acid anhydride when making an ester?

Answer 4

Otherwise more than one ester can be made

Question 5

Which alcohol does not produce an ester when reacted with a carboxylic acid?

Answer 5

Phenol

Question 6

What is produced from the hydrolysis of an ester in acidic conditions?

Answer 6

CArboxylic acid + alcohol

Question 7

What is produced from the hydrolysis of an ester in alkaline conditions?

Answer 7

Carboxylate + alcohol

Question 8

What are the reagents and conditions used for the hydrolysis of an ester in acidic conditions?

Answer 8

Dilute HCl

H.U.R

Question 9

What are the reagents and conditions used for the hydrolysis of an ester in alkaline conditions?

Answer 9

Dilute NaOH/KOH

H.U.R