RP6 Organic tests Flashcards
1
Q
How do you test for an alcohol
A
Add alcohol to test tube and small piece of sodium
Presence of alcohol is indicated by white ppt and effervescence
2
Q
How do you distinguish between different alcohol types
A
Heat under reflux with acidified potassium dichromate (VI). Primary and secondary alcohols will be oxidised, orange to green. Tertiary alcohols can’t be oxidised and will remain orange
3
Q
How do you test for a carboxylic acid
A
Add Na2CO3 to sample
If a carboxylic acid is present CO2 will be given off - effervescence
4
Q
How to test for haloalkane
A
Add NaOH solution, warm then add nitric acid then silver nitrate
Ppt will form, usual colours chloride white
