Organic analysis Flashcards
1
Q
tesing for halogenoalkane
steps, result
A
1- warm with NaOH acidified with nitric acid (make the halogen ion)
2- add silver nitric acid
Cl-white ppt
Br-cream ppt
I-yellow ppt
2
Q
testing for alcohols
A
add acidified sodium dichromate with sulfuric acid
primary- green
secondary- green
tertiary- not oxidised
3
Q
testing for aldehydes
A
1-tolens reagent - silver mrror
2-feligns solution - blue to red
4
Q
alkenes
A
bromine water - orange to colourless
5
Q
carboxylic acids
A
add carbonate
bubble gas through lime water
cloudy ppt
6
Q
Acidified Potassium Permanganate
A
The test for alcohol. A positive test turns colourless from purple
