4.38-4.43 Esters

What happens in esterification reactions?

Alcohols and carboxylic acids react to make esters

What is the functional group fo esters?

R-COO-R

Fill in the gap: Esters are sweet-smelling oily liquids used in [ ] [ ] and [ ]

Esters are sweet-smelling oily liquids used in food flavouring and perfumes

When ethanoic acid reacts with ethanol in the presence of catalyst concentrated sulfuric acid, what does it form?

Ethyl ethanoate

What is an ester made from?

An alcohol and a carboxyclic acid

What is the ester formed from pentanol and butanoic acid called?

Ester formed from pentanol and butanoic acid is called pentyl butanoate

What ester is created from butanol and methanoic acid?

Butyl methanoate

What ester is created from ethanol and propanoic acid?

Ethyl propanoate

Why can a Bunsen not be used with ethanol?

Ethanol is flammable

Why are esters the first to evaporate from the reaction mixture of ethanoic acid, ethanol and concentrated sulfuric acid which is heated gently?

Esters have low boiling points (they are volatile)

How can the distillate be checked for an ester?

The distillate can be smelt to check whether an ester has been produced

What solution is added to remove acidic impurities?

Sodium carbonate solution can be added until the mixture stops fizzing as no more carbon dioxide is evolved

What solution can you add to remove ethanol?

Calcium chloride solution