To prepare ammonia gas in the laboratory and study its properties GSEB std 8 to 12

Prepare Ammonia Gas

To prepare ammonia gas in the laboratory 









AIM :  To prepare ammonia gas in the laboratory and study its properties

THEORY :  On heating a mixture of ammonium chloride and calcium hydroxide, we get ammonium gas.

APPARATUS   :  Big hard glass tube, delivery tube, hollow glass tube, Bunsen burner, glass rod, two single-holed rubber cork, four to five gas jar with lids, stand and one CaO bottle as shown in the figure.

CHEMICALS : Calcium hydroxide, ammonium chloride, concentrated hydrochloric acid, red and blue litmus papers.

Preparation of Ammonia gas

Prepare Ammonia Gas In Laboratory (step-1)

Prepare Ammonia Gas In Laboratory (step-2)

Prepare Ammonia Gas In Laboratory (step-3)

Prepare Ammonia Gas In Laboratory (step-4)

Prepare Ammonia Gas In Laboratory (step-5)

Prepare Ammonia Gas In Laboratory (step-6)

Observation :

i. Colour of ammonia gas :

ii. Odour or smell of ammonia gas :

iii. Ammonia gas is collected by downhard displacement of air therefore it is than air.

iv. Use moist  red and blue litmus papers and check the effect on ammonia gas and conclude :

         Wet red litmus : 

Wet blue litmus : 

 Conclusion :

 What happens when a glass rod is dipped in concentrated HCL is brought near the mouth of gas jar containing ammonia ?

CONCLUSION

PRACTICAL USES

Ammonia is used in the manufacture of fertilizers, nitric acid, nylon fibers and in many organic chemicals.