Aldehydes + Ketones

Question 1

Aldehydes + Ketones: IMF’s

Answer 1

dipole - dipole

Question 2

Aldehydes + Ketones: Soluble

Answer 2

• soluble due to H-bonding with water
• as chain length increases solubility decreases

Question 3

Reduction of aldehydes

Answer 3

primary alcohol

Question 4

Reduction of ketones

Answer 4

secondary alcohol

Question 5

Aldehydes + HCN
- (KCN in H2SO4)

Answer 5

2-hydroxy____nitrile

(chain increases by 1)

Question 6

Ketones + HCN
- (KCN in H2SO4)

Answer 6

2-hydroxy-2____alkyls

Question 7

Testing for Aldehydes + Ketones

Answer 7

1) 2-4 DNPH - forms an orange/yellow/red precipitate

• cool, filter, dry and then compare the melting temps with the data book

2) Iodoform reaction (I2 + NaOH)
forms pale yellow precipitate