Preperation Of Gases

Question 1

Ammonia
Preparation?
Identification?

Answer 1

Ammonium salt + alkali
Red to blue litmus
Fumes of ammonium chloride
Wooden splinter extinguishes

Question 2

Carbon dioxide
Preparation?
Identification?

Answer 2

Any carbonate + acid
Blue to red litmus
Wooden splinter extinguishes

Question 3

Chlorine
Preparation?
Identification?

Answer 3

Any chloride + conc sulfuric acid + manganese (IV) oxide
Blue to red litmus
Wooden splinter extinguishes

Question 4

Hydrogen
Preparation?
Identification?

Answer 4

Zinc/ maganesium + hydrochloric acid

Burns with a pop sound

Question 5

Hydrogen chloride
Preparation?
Identification?

Answer 5

Any chloride + sulphuric acid
Blue to red litmus
Wooden splinter extinguishes
White fumes of ammonia gass

Question 6

Oxygen
Preparation?
Identification?

Answer 6

Hydrogen peroxide + MnO2
Relighted glowing splinter
No change on litmus

Question 7

Sulphur dioxide
Preparation?
Identification?

Answer 7

Any sulphate + hydrochloric acid
Litmus turns red
Wooden splinter extinguishes
Change in potassium maganate (VII) and potassium dichromate

Question 8

Nitrogen
Preparation?
Identification?

Answer 8

Any nitrate + heat

Extinguishes splinter

Question 9

Nitrogen dioxide
Preparation?
Identification?

Answer 9

Any nitrate (V) + conc. sulphuric acid + copper turnings
Red brown colour
Litmus turns red
Splinter extinguishes