Question

On heating ammonium dichromate and barium azide separately, we get

• A. $N_{2}O$ with ammonium dichromate and $N_2$ with barium azide
• B. $N_{2}O$ with ammonium dichromate and $N{O}_2$ with barium azide
• C. $N_2$ with ammonium dichromate and $NO$ with barium azide
• D. $N_2$ in both the cases

Answer 1

The correct option is D $N_2$ in both the cases

$\text{Decomposition of ammonium dichromate}$

• Ammonium dichromate on heating decomposes to chromium oxide, water and $N_2$ gas.

$(N{H}_4{)}_{2}C{r}_2{O}_7\to C{r}_2{O}_3+4H_{2}O+N_2\uparrow$

$\text{Decomposition of barium azide}$

• Barium azide on heating decomposes to barium metal and $N_2$ gas.

$Ba(N_3{)}_2\to Ba+3N_2\uparrow$

From the balanced chemical reactions, both the compounds decompose to liberate $N_2$ gas upon heating.

So, option $\left(A\right)$ is the correct answer.