P-Block Elements Ques 290

Question: Pure $ N_2 $ gas is obtained from

[CBSE PMT 1991]

Options:

A) $ NH_3+NaNO_2 $

B) $ NH_4Cl+NaNO_2 $

C) $ N_2O+Cu $

D) $ {{(NH_4)}_2}Cr_2O_7 $

Show Answer

Answer:

Correct Answer: B

Solution:

$ \underset{(aq)}{\mathop{NH_4Cl}}+\underset{(aq)}{\mathop{NaNO_2}}\to NH_4NO_2+NaCl $ $ NH_4NO_2\xrightarrow{heat}\underset{(g)}{\mathop{N_2}}+\underset{(l)}{\mathop{2H_2O}} $



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