Carboxylic Acids Flashcards
1
Q
Functional group
A
COOH
2
Q
Describe carboxylic acids in water
A
- only partially ionising in aqueous solution
= they’re weak acids
= higher pH than a strong acid
3
Q
Describe reaction with metal carbonates
A
- make co2 and water
- create a salt
4
Q
Describe reaction with an alcohol
A
- creates an ester and water
= used a lot in foods - reversible reaction
5
Q
Why are they weak
A
Don’t dummy ionise
= don’t release all their hydrogen ions
6
Q
How are they made
A
Oxidise an alcohol with an oxidising when
7
Q
Properties of esters
A
Pleasant smells and evaporates easily
= used as perfumes and food flavourings
8
Q
How to make water
A
Mix alcohol and carboxylic acid with an acid catalyst
When they combine alcohol lose H and carboxylic acid lose OH to make water molecule
