3.3.8 -aldehydes and ketones Flashcards
1
Q
What are aldehydes oxidised to
A
Carboxylic acids
2
Q
2 chemical tests for aldehydes
A
Fehlings
Blue to red
Tollens
Colourless to silver mirror
3
Q
What are aldehydes reduced to
A
Primary alcohols
4
Q
What are ketones reduced to
A
Secondary alcohols
5
Q
What is reagent for reduction of aldehydes and ketones
A
NaBH4
6
Q
What kind of reaction is reduction of aldehydes and ketone
A
Nucleophilic addition
7
Q
Show mechanism of nucleophilic addition
A
Draw
8
Q
Show example equation of KCN with ethanal
A
Draw
9
Q
Method used for HCN to be used
A
Generate HCN in situ be adding HCl to KCN
10
Q
What are danger of KCN
A
Highly toxic gas - rapid death
Method used = highly toxic only if ingested
