Laboratory Preparation
Chemistry of Alchemist (Science Diary)✒
Laboratory Preparation of Nitrogen using Sodium
nitrite (NaNO2) and Ammonium Chloride (NH4Cl).
(The best example to Displacement Reactions).
About Element Nitrogen (symbol N):
Atomic number: 7, Discovered and Isolated by Daniel Rutherford in 1772.
Step
I. NaNO2 +NH4Cl
----convert to--- NH4NO2 +NaCl
(Reactants)
----Convert to--- (Products)
Step
II. NH4NO2 ----convert
to--- N2 + 2H2O
(Reactants)----Convert
to--- (Products)
#
(Decomposition of Ammonium nitrite (NH4NO4), produced
gaseous Nitrogen (N2) in Step II).
Figure: Illustration for the laboratory preparation of Nitrogen. (Apparatus setup)
Video link: laboratory preparation
https://www.youtube.com/watch?v=6mos8zB36TY

In laboratory, nitrogen is prepared by heating an aqueous solution of NH4Cl and NaNO2(1:1) the NH4NO2 formed as a result of double decomposition reaction, being unstable decomposes to form N2 gas
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