Esters

Question 1

How are esters used?

Answer 1

Perfumes + solvents

Question 2

How do you name an ester?

Answer 2

Alcohol with ‘yl’ and carboxylic acid with ‘oate’

Question 3

Ethanol + propanoic acid = X + water, name X

Answer 3

Ethyl propanoate

Question 4

To make an eater you need a carboxylic acid and an alcohol but what else?

Answer 4

A catalyst e.g. Concentrated HCL

Question 5

Are esters polar or non-polar?

Answer 5

Non-polar

Question 6

How can you split up an ester?

Answer 6

Adding water - hydrolysis

Question 7

How do you calculate the mass of something when e.g. 10g of something else is used

Answer 7

Calculate gfm, 1 mole - 1 mole, divide gfm’s by number on right to get 1g, times by gram you already know

Question 8

Percentage yield equals

Answer 8

Actual yield / theoretical yield

Question 9

Esterification is the process to make esters, but what is needed to make them?

Answer 9

Alkanoic acids and alkanols or carboxylic acid and alcohol