Question

How is nitrogen prepared in laboratory write the chemical equation of the reaction involved?

Answer 1

To prepare pure nitrogen in the laboratory,

a mixture of ammonium chloride (NH4Cl) and sodium nitrite (NaNO2) is heated.

The first product that is formed is ammonium nitrite (NH4NO2). This compound is very unstable, and breaks up into nitrogen and water.

Please find the attachment for the chemical equation below

Hope it helps

Answer 2

Answer:

An aqueous solution of ammonium chloride is treated with sodium nitrite.

NH4Cl (aq ) + NaNO2 →N2(g) + 2H2O(l) + NaCl(aq)

NO and HNO 3

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 are produced in small amounts. These are impurities that can be removed on passing nitrogen gas through aqueous sulphuric acid, containing potassium dichromate.