The heating of $\mathrm{NH}_{4} \mathrm{NO}_{2}$ at $60-70^{\circ} \mathrm{C}$ and $\mathrm{NH}_{4} \mathrm{NO}_{3}$ at $200-250^{\circ} \mathrm{C}$ is associated with the formation of nitrogen containing compounds $\mathbf{X}$ and $\mathbf{Y}$, respectively. $\mathbf{X}$ and $\mathbf{Y}$, respectively, are

(A) $\mathrm{N}_{2}$ and $\mathrm{N}_{2} \mathrm{O}$

(B) $\mathrm{NH}_{3}$ and $\mathrm{NO}_{2}$

(C) NO and $\mathrm{N}_{2} \mathrm{O}$

(D) $\mathrm{N}_{2}$ and $\mathrm{NH}_{3}$

JEE Advanced · 2025 · 18 May 2025 · Paper 1 · p-Block Elements

The heating of

NH_{4} NO_{2}

60 - 7 0^{\circ} C

and

NH_{4} NO_{3}

200 - 25 0^{\circ} C

is associated with the formation of nitrogen containing compounds

X

and

Y

, respectively.

X

and

Y

, respectively, are

Answer: (A)

When ammonium nitrite (

NH_{4} NO_{2}

) is heated at

60 - 7 0^{\circ} C

, it decomposes to form nitrogen gas and water:

NH_{4} NO_{2} Δ N_{2} + 2 H_{2} O

When ammonium nitrate (

NH_{4} NO_{3}

) is heated at

200 - 25 0^{\circ} C

, it decomposes to form nitrous oxide and water:

NH_{4} NO_{3} Δ N_{2} O + 2 H_{2} O

Therefore,

X = N_{2}

and

Y = N_{2} O

JEE Advanced · 2025 · 18 May 2025 · Paper 1 · Single correct option