Methods Flashcards
1
Q
Flame Tests
Lithium
A
RED
2
Q
Flame Tests
Sodium
A
ORANGE
3
Q
Flame Tests
Potassium
A
LILAC
4
Q
Flame Tests
Calcium
A
BRICK RED
5
Q
Testing for NH4+
A
Add Sodium hydroxide
Warm
Add damp red litmus paper
Paper should turn blue
6
Q
Testing for Cu2+ / Fe2+ / Fe3+
A
Add sodium hydroxide
Cu - Blue precipitate
Fe2+ - Green precipitate
Fe3+ - Brown precipitate
7
Q
Testing for Cl Br and I
A
Add nitric acid unless the solution is already acidic
Add silver nitrate
Cl - white precipitate
Br - cream precipitate
I - yellow precipitate
8
Q
Testing for carbonates
A
Add HCl
CO2 is produced which can be tested using lime water
9
Q
Testing for sulphates
A
add dilute hydrochloric acid
add barium chloride
A white precipitate forms
