Carboxylic acids Flashcards
1
Q
what is the functional group of carboxylic acids
A
-COOH
2
Q
molecular and structural formula of ethanoic acid
A
3
Q
what is vinegar made up of and how is it formed
A
an aqueous solution of ethanoic acid
formed when ethanol undergoes microbial oxidation
4
Q
why does vinegar have a sour, acrid taste
A
because of the acidity of ethanoic acid
5
Q
how do carboxylic acids behave as acids
A
- they are weak acids so donate H+ to form a salt
6
Q
general equation for carboxylic acid + metal and what would you observe
A
-> salt + hydrogen
- Effervescence: due to the hydrogen gas being produced.
- Solid disappears: due to the metal being used up in the reaction.
7
Q
reaction of metal carbonate and carboxylic acids
A
8
Q
when heating ethanol why do you use a water bath instead of a Bunsen burner
A
because ethanol is flammable
9
Q
what are the uses of esters
A
- perfumes
- food flavourings
- making soaps/detergents
