Esters

Question 1

naming esters

e.g CH3COOC2CH3

Answer 1

alcohol prefix -yl
carboxylic acid/derivative suffix -anoate
ethyl ethanoate

Question 2

1. Carboxylic acid + alcohol
2. methanoic acid + methanol
3. HCOOH + CH3OH
4. catalyst
5. reversible reaction so need to

Answer 2

1. ester + water
2. methyl methanoate + water
3. HCOOCH3 +
4. conc sulfuric acid
5. separate product as formed. large ester = reflux & fractional distillation. small ester = distil

Question 3

1. Acid anhydride + alcohol

2. ethanoic acid + methanol

Answer 3

1. ester + carboxylic acid

2. methyl ethanoate +

Question 4

acid anhydride

how to make an acid anhydride

Answer 4

carboxylic acid + carboxylic acid

RCOOCOR

Question 5

hot aq acid hydrolysis

Answer 5

1. splits ester into carboxylic acid and alcohol

Question 6

hot aq alkali (NaOH) hydrolysis

Answer 6

1. splits ester into carboxylate salt + alcohol

Question 7

1. Acyl chloride + alcohol

ROCl

Answer 7

ester + hydrogen chloride