Carboxylic Acids And Esters

Question 1

When carboxylic acids react with carbonates what is formed?

Answer 1

Carboxylate salt, water and CO2

Question 2

What can carboxylic acids form when they react with carbonates?

Answer 2

Carboxylate salts, water and CO2

Question 3

Why can small chain carboxylic acids dissolve in water?

Answer 3

They can form hydrogen bonds between the water’s oxygen’s lone pair and the COOH’s delta positive hydrogen

Question 4

3 uses of esters

Answer 4

Perfume
Food flavourings
Solvent for polar molecules

Question 5

How is a biodiesel produced?

Answer 5

Methanol reacting with vegetable oils with a catalyst

Question 6

3 derivatives of carboxylic acids

Answer 6

Acid anhydrides
Acyl chlorides
Amides

Question 7

What is aspirin made of? Why isn’t another reactant used instead of one of them?

Answer 7

Salicylic acid and ethanoic anhydride
Ethanoyl chloride is expensive and produces harmful HCL fumes

Question 8

2 esters of propane-1,2,3-triol (glycerol)

Answer 8

Animal fats
Vegetable oils

Question 9

Vegetable oils and animal fats can be hydrolysed in alkaline conditions to give …

Answer 9

soap (salts of long-chain carboxylic acids) and glycerol

Question 10

What is biodiesel a mixture of?

Answer 10

methyl esters of long-chain carboxylic acids

Question 11

when naming dicarbacids what letter MUST be in the name

Answer 11

e

-edioic eg