Aldehydes and Ketones A2 Flashcards
1
Q
What is the functional group for aldehydes
A
CHO
2
Q
What is the functional group for ketones
A
C=O
3
Q
What is the carbonyl group
A
Carbon-oxygen double bond
4
Q
What intermolecular forces do aldehydes and ketones have
A
VdW and dipole-dipole
5
Q
Do aldehydes and ketones dissolve in water
A
Shorter chains do due to the hydrogen bonding
6
Q
How are they oxidised
A
Using acidified potassium dichromate, signified by the symbol [O]
7
Q
What is the fehling’s test
A
A mixture of two compounds containing copper ions and an alkali, which turns brick red due to copper oxide with aldehydes and no reaction to ketons
8
Q
What is the tollen’s reagent
A
Contains ammoniacal silver nitrate, which forms a silver mirror with aldehydes and no reaction to ketones
9
Q
How are they reduced
A
Using NaBH4, symbolised with 2[H]
