Chemistry - Tests for Gases

Ammonia, NH3

Ammonia, NH3

Turns damp red litmus paper blue

Carbon dioxide, CO2

Turns limewater milky

Chlorine, Cl

Bleaches damp litmus paper

Hydrogen, H2

‘Pops’ with a lighted splint

Oxygen, O2

Relights a glowing splint

Sulfur dioxide, SO2

Turns acidified aqueous potassium manganate (VII) from purple to colourless