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

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Comments

  1. 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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