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.
|Prepare Ammonia Gas in Laboratory|
Colour of ammonia gas :
Odour or smell of ammonia gas :
Ammonia gas is collected by downhard displacement of air therefore it is than air.
Use moist red and blue litmus papers and check the effect on ammonia gas.
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 ?
Prepare Ammonia Gas in Laboratory Science practical animation video