Identification of Organic Compounds Flashcards
1
Q
Blue litmus - turns red
A
Carboxylic
acids
2
Q
Red litmus - turns blue
A
Amines
3
Q
Universal indicator - Color changes
A
Amines (blue - purple)
Carboxylic
acids (red - orange)
4
Q
Na2CO3 solution - fizzes
A
Carboxylic
acids
Acid and base reaction.
Forms a salt, water and carbon dioxide (why the solution fizzes).
5
Q
Br2 water -
Decolorises
A
Alkenes (addition reaction)
The double bond is broken and two Br atoms are added to each C.
6
Q
KMnO4 solution -
Decolorised
A
Alkenes and Alochols. oxidise
Purple to colorless
7
Q
K2Cr2O7 solution -
Goes green
A
OMG - Orange makes green
Alcohols
