1
Q
how to test for alkenes
A
add bromine water and shake
2
Q
positive results for test for alkenes
A
orange bromine water goes colourless
3
Q
how to test for a halogenoalkane
A
- add aqueous sodium hydroxide and gently warm.
- acidify with nitric acid
- add silver nitrate
4
Q
Positive result of a halogenoalkane
A
Precipitate will form
AgCl- white
AgBr- cream
AgI- yellow
5
Q
How to test for an alcohol
A
add acidified potassium dichromate
6
Q
Positive result for test for alcohols
A
Orange turns to green with a primary or secondary alcohol
No reaction with a tertiary alcohol
7
Q
How to test for an aldehyde (2 methods)
A
- Warm with tollens reagent
- Warm with fehlings solution
8
Q
Positive result for test for aldehyde
A
If tested with tollens- silver mirror forms
If tested with fehlings- Blue solution turns to a red precipitate
9
Q
How to test for a carboxylic acid
A
add sodium hydrogen carbonate
10
Q
A
chem
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