Lesson 7: Carboxylic acids Flashcards
1
Q
What functional group do carboxylic acids have?
A
—COOH
2
Q
What are the first 4 members of a homologous series of carboxylic acids?
A
- Methanoic acid
- Ethanoic acid
- Propanoic acid
- Butanoic acid
3
Q
Why are carboxylic acids weak acids (in terms of ionisation and pH?)
A
- They only partially ionise in aqueous solutions.
- Because they only partially ionise, they have a higher pH than stronger acids.
4
Q
What do all salts produced by a carboxylic acid and metal carbonate reacting end in?
A
- anoate.
- Ie.
Ethanoic acid + sodium carbonate —> sodium ethanoate + carbon dioxide + water
5
Q
What are the products when a carboxylic acid reacts with an alcohol?
A
Carboxylic acid + alcohol —> ester + water
6
Q
What catalyst is needed when reacting ethanoic acid with ethanol?
A
- Sulphuric acid catalyst is needed.
7
Q
What are the products of the reaction between ethanoic acid and ethanol?
A
Ethanoic acid + ethanol –> ethyl ethanoate + water
