Chemical tests Flashcards
1
Q
test for alkenes
A
bromine water
orange –> colourless
2
Q
test with acidified potassium dichromate
A
K2Cr2O7
1 alcohol
2 alcohol
aldehyde
orange –> green
3
Q
test for aldehyde
A
tollens
-silver mirror
fehlings
-brick red precipitate
4
Q
test for carboxylic acid
A
-sodium carbonate
NaCO3
effervescence
5
Q
[Ba]2+ ion test
A
H2SO4
white ppt
6
Q
[SO4]2- ion test
A
BaCl2
white ppt
7
Q
[Mg]2+ ion test
A
NaOH
white ppt
8
Q
[OH]- ion test
A
MgCl2
white ppt
9
Q
Cl- ion test
A
AgNO3
white ppt
10
Q
Br- ion test
A
AgNO3
cream ppt
11
Q
I- ion test
A
AgNO3
yellow ppt
12
Q
AgCl ion test
A
Dilute NH3
AgCl ppt dissolves
13
Q
AgBr ion test
A
Conc. NH3
AgBr ppt dissolves
14
Q
[NH4]+ ion test
A
NaOH and heat
gas released turns
litmus paper
red –> blue
15
Q
[CO3]2-
A
Acid
Effervescence
