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}} $
