$N H_{4} N O_{3}$ and $N H_{4} N O_{2}$ on heating decomposes in to
(A) $N O_{2}$ , $N_{2}$
(B) $N O_{2}$ , $N O_{3}$
(C) $N_{2} O$ , $N_{2}$
(D) $N O_{3}$ , $N O_{2}$

Answer

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Hint: Decomposition of ammonium derivatives liberates toxic gases like ammonia, nitrogen oxides and water vapor. Different ammonium derivatives liberate different combinations of gases.

Complete step by step answer:
* Decomposition of ammonium nitrate (

N H_{4} N O_{3}

) creates toxic gases like nitrogen oxides and water. The resulting nitrogen oxides will support combustion, even in the absence of oxygen.

N H_{4} N O_{3} \to N_{2} O_{(g)} ↑ + 2 H_{2} O

N_{2} O

is called nitrous oxide or laughing gas.
* Decomposition of ammonium nitrite (

N H_{4} N O_{2}

) liberates nitrogen gas (

N_{2}

) and water vapor.

N H_{4} N O_{2} \to {N_{2}}_{(g)} ↑ + 2 H_{2} O

* After decomposition ammonium nitrate (

N H_{4} N O_{3}

) liberates nitrous oxide (

N_{2} O

) and water.
* After decomposition ammonium nitrite (

N H_{4} N O_{2}

) liberates nitrogen gas (

N_{2}

) and water vapor.
* Ammonium nitrate and ammonium nitrite salts both form water vapor after decomposition. But ammonium nitrate forms nitrous oxide and ammonium nitrite forms nitrogen gas after decomposition.
* Option A is wrong, because

N O_{2}

is not going to release after decomposition of the given compounds.
* Option B is wrong, because

N O_{2}

and

N O_{3}

are not going to release after decomposition of the given compounds.
* Option D is wrong, because

N O_{3}

and

N O_{2}

are not going to release after decomposition of the given compounds.
* Ammonium nitrate and ammonium nitrite salts both form water vapor after decomposition.
So, the correct option is C.

Note: Don’t be confused with the oxides of nitrogen.
Ammonium nitrate (