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Here are a few common methods of preparation of some important compounds of
1)Dinitrogen () :
Laboratory method :
Very pure can be obtained by thermal decomposition of Sodium or Barium azide
optimum conditions for commercial production-
3)Nitric acid ( )
mixture is called fuming nitric acid
optimum condition: bar pressure, gauge catalyst
Phosphine can be prepared by reacting white phosphorus with hot in an inert atmosphere of
By heating oxygen containing salts such as chlorates ,nitrates and permanganates in the presence of catalysts such as MnO2.
It is also obtained by the electrolysis of water .
By contact process :
a)burning of sulphur or sulphide ores to generate which is converted to
b)absorption of by to give Oleum.
The sulphuric acid so obtained is 96-98% pure.
By Deacon's process......catalyst:
Acid so obtained is dried using Conc sulphuric Acid..