C7.2 Carboxylic acids Flashcards
1
Q
- What are the characteristic properties of carboxylic acids are due to?
A
-the presence of the –COOH functional group
2
Q
- What are the names of carboxylic acids?
A
- methanoic acid
- ethanoic acid
3
Q
- What is the formula for methanoic acid?
A
HCOOH
4
Q
- What is the formula for ethanoic acid?
A
CH3COOH
5
Q
- How do you recognise the names of carboxylic acids?
A
-they end in ‘-anoic acid’
6
Q
- What smell and taste do many carboxylic acids have?
A
-many carboxylic acids have unpleasant smells and tastes and are responsible for the smell of sweaty socks and the taste of rancid butter
7
Q
- What do salts made from carboxylic acids end in?
A
-‘anoate’
8
Q
- What do carboxylic acids react with metals to make?
A
-salt and hydrogen
9
Q
- What do carboxylic acids react with carbonates to make?
A
-salt water and carbon dioxide
10
Q
- What do carboxylic acids react with alkalis to make?
A
-salt and water
11
Q
- What is vinegar?
A
-a dilute solution of ethanoic acid
12
Q
- Why are carboxylic acids called weak acids?
A
-because they are less reactive than strong acids such as hydrochloric acid, sulfuric acid and nitric acid
13
Q
- What pH do dilute solutions of weak acids have compared to dilute solutions of strong acids?
A
-higher pH values
