P-Block Elements Ques 393

Question: $ {{(NH_4)}_2}Cr_2O_7 $ on heating liberates a gas. The same gas will be obtained by

[IIT JEE (Screening) 2004; BVP 2004]

Options:

A) Heating $ NH_4NO_2 $

B) Heating $ NH_4NO_3 $

C) Treating $ H_2O_2 $ with $ NaNO_2 $

D) Treating $ Mg_3N_2 $ with $ H_2O $

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Answer:

Correct Answer: A

Solution:

$ {{(NH_4)}_2}Cr_2O_7\xrightarrow{\Delta }N_2\uparrow +Cr_2O_3+4H_2O $ $ NH_4NO_2\xrightarrow{\Delta }N_2\uparrow +2H_2O $



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