Module 6, Section 3 Flashcards
1
Q
How do you identify an alkene functional group?
A
Add bromine water drop wise, solution decolourised
2
Q
How do you identify a haloalkane functional group?
A
Add silver nitrate and ethanol, and warm to 50 degrees celsius in water bath.
Chloroalkane is a white precipitate
Bromoalkane is a cream precipitate
Iodoalkane is a yellow precipitate
3
Q
How do you identify a carbonyl functional group?
A
Add 2,4 DNP, orange precipitate
4
Q
How do you identify an aldehyde functional group?
A
Add Tollens’ reagant and warm, silver mirror
5
Q
How do you identify a primary and secondary alcohol and aldehyde?
A
Add acidified potassium dichromate(VI) and warm in water bath.
Orange to green
6
Q
How do you identify a carboxylic acid functional group?
A
Add aqueous sodium carbonate, effervescence
