JEE Advanced 2025 — Paper 1 — CHEM-I solution

JEE Advanced2025Paper 1CHEM-I

The heating of NH $_{4}$ NO $_{2}$ at 60–70ºC and NH $_{4}$ NO $_{3}$ at 200–250ºC is associated with the formation of nitrogen containing compounds X and Y, respectively. X and Y, respectively, are

A
N $_{2}$ and N $_{2}$ O
B
NH $_{3}$ and NO $_{2}$
C
NO and N $_{2}$ O
D
N $_{2}$ and NH $_{3}$

Solution

Ammonium nitrite undergoes thermal decomposition to dinitrogen and water:

$NH_{4} NO_{2} 60-7 0^{\circ} C N_{2} + 2 H_{2} O$

Ammonium nitrate at moderate temperatures gives nitrous oxide:

$NH_{4} NO_{3} 200-25 0^{\circ} C N_{2} O + 2 H_{2} O$

Hence X is N $_{2}$ and Y is N $_{2}$ O, option (A).

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