The P Block Elements - Result Question 29

####29. Pure nitrogen is prepared in the laboratory by heating a mixture of

[1991]

(a) NH4OH+NaCl

(b) NH4NO3+NaCl

(c) NH4Cl+NaOH

(d) NH4Cl+NaNO2.

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Solution:

  1. (d) Pure nitrogen in the lab can be obtained by heating ammonium nitrate. Ammonium nitrate is not a stable compound it dissociate to give nitrogen.

NH4Cl+NaNO2 Heat NH4NO2 Heat N2+2H2O.



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