Advertisements
Advertisements
प्रश्न
Describe the laboratory method of preparation of ammonia
उत्तर
On a small scale, ammonia is prepared by decomposition of ammonium salts when treated with slaked lime. Moist ammonia is dried by passing over quick lime (CaO).
2NH4Cl + Ca(OH)2 `Delta /`> 2NH3 + CaCl2 + 2H2O
Ammonium Slaked lime Ammonia Calcium chloride
chloride
APPEARS IN
संबंधित प्रश्न
What is the action of the following reagents on ammonia :
Nessler's reagent
How does ammonia react with a solution of Cu2+?
How is ammonia manufactured industrially?
What is the action of Excess of chlorine on ammonia?
What is the action of Na Metal on ammonia?
What is Nessler’s reagent ?
In laboratory ammonia is prepared by heating:
Which compound is used in the preparation of caprolactam?
Which compound is used as the cooling liquid in refrigerators?
Ammonia act as a Lewis base because nitrogen has ____________.
In Haber’s process for the manufacture of NH3:
Ammonia on reaction with hypochlorite anion can form:
When ammonia is heated with cupric oxide, a molecule of ammonia will ____________.
Liquid ammonia bottles are opened after cooling them in ice for some time. It is because liquid NH3 ____________.
In qualitative analysis when \[\ce{H2S}\] is passed through an aqueous solution of salt acidified with dil. \[\ce{HCl}\], a black precipitate is obtained. On boiling the precipitate with dil. \[\ce{HNO3}\], it forms a solution of blue colour. Addition of excess of aqueous solution of ammonia to this solution gives ______.
A brown ring is formed in the ring test for \[\ce{NO3^{-}}\] ion. It is due to the formation of ______.
In the preparation of HNO3, we get NO gas by catalytic oxidation of ammonia. The moles of NO produced by the oxidation of two moles of NH3 will be ______.
\[\ce{PCl5}\] reacts with finely divided silver on heating and a white silver salt is obtained, which dissolves on adding excess aqueous \[\ce{NH3}\] solution. Write the reactions involved to explain what happens.
What happens when reactions:
Benzylchloride is treated with ammonia followed by the reaction with Chloromethane.
