Organic: Tests for Compounds Flashcards
(14 cards)
1
Q
Alkane
A
NO POSITIVE TEST
2
Q
Alkene
A
Add Br2
If present: colour change from orange/brown–>colourless
3
Q
Halogenoalkane
A
Heat + NaOH(aq), excess HNO3(aq), then add AgNO3
If present: white, cream or pale yellow precipitate forms.
4
Q
Alcohol
A
Heat + H+/Cr2O72-
If primary or secondary present: Orange—>Green
If tertiary present: NVR
5
Q
Nitrile
A
NO POSITIVE TEST
6
Q
Primary Amine
A
NO POSITIVE TEST
7
Q
Secondary Amide
A
NO POSITIVE TEST
8
Q
Carboxylic Acid
A
+Na2CO3(aq) or (s)
If present: effervescence
9
Q
Acyl Chloride
A
+H2O(l)
If present: Misty fumes of HCl(g)
10
Q
Primary Amide
A
NO POSITIVE TEST
11
Q
Ester
A
+H2O(l)
If present: misty fumes of HCl(g)
12
Q
Ketone
A
NO POSITIVE TEST
13
Q
Aldehyde
A
Heat + Tollen’s Reagent (silver mirror)
Heat + Fehling’s (red precipitate)
14
Q
Hydroxynitrile
A
NO POSITIVE TEST
