Question

On heating $NaN{O}_3$, it gives:

• A. $N_2$
• B. $N{O}_2$
• C. $O_2+N{O}_2$
• D. $NaN{O}_2+O_2$

Answer 1

The correct option is D $NaN{O}_2+O_2$

All alkali nitrates except lithium on heating decompose to give lithium nitrite and oxygen. Lithium is an exception due to its small size and polarisation property. They give oxides, nitrogen dioxide and oxygen on decomposition.
$2NaN{O}_3\to 2NaN{O}_2+O_2$