Question

Nitrogen gas is obtained by thermal decomposition of

• A. $Ba(N_3{)}_2$
• B. $NaN{O}_2$
• C. $NaN{O}_3$
• D. $Ba(N{O}_3{)}_2$

Answer 1

The correct option is A $Ba(N_3{)}_2$

Very pure dinitrogen can be obtained by the thermal ​decomposition ​of barium azide and sodium azide.
$Ba\left(N_3{)}_2\right(s\left)\stackrel{\Delta }{\to }Ba\right(s)+3N_2(g)\uparrow$
$2Na{N}_3\left(s\right)\stackrel{\Delta }{\to }2Na\left(s\right)+3N_2\left(g\right)\uparrow$
$Ba(N_3{)}_2\stackrel{\Delta }{⟶}Ba+3N_2$