Different tests can be performed to test for different gases
1. Oxygen
Oxygen is a colorless odorless gas. As it is the gas helping to burn it can be tested by
:entering a glowing splint in to the gas
then the glowing splint will be relighted.
Method of preparation of Oxygen gas: add Manganese dioxide into hydrogen peroxide and collect via upward delivery
2. Chlorine
Chlorine is a toxic gas having a pale yellow color.As it has bleaching properties it can be tested by
: Keeping a damp red/blue litmus paper
then the litmus paper will become white( bleached)
Method of preparation of Chlorine gas: add HCl in to solid potassium permangenate
3. Hydrogen
Hydrogen is a colorless odorless gas that can burn and can be used as a fuel. Test for Hydrogen is
: enter a burning splint
then it will burn with a characteristic 'pop' sound
Method of preparation of Hydrogen: add HCl in to zinc
4. Ammonia
Ammonia is a gas having a characteristic odor but no color. As it forms alkaline ammonium hydroxide by dissolving in water it can be tested by
: keeping a damp red litmus paper
then it will turn blue
Method of preparation for ammonia: add sodium hydroxide to ammonium chloride