Question

Complete the given reaction.

$Hg{\left(N{O}_3\right)}_2\underset{}{\overset{\Delta }{\to }}N{O}_2+O_2+$.

• A. $Hg$
• B. $HgO$
• C. $H{g}_3{N}_2$

Answer 1

The correct option is A $Hg$

When $Hg(N{O}_3{)}_2$ is heated at elevated temperature, it decomposes to form $Hg$, $N{O}_2$ and $O_2$.

$\mathrm{Hg}{\left({\mathrm{NO}}_3\right)}_2\left(s\right)\underset{}{\overset{\Delta }{\to }}\mathrm{Hg}\left(l\right)+2{\mathrm{NO}}_2\left(g\right)+O_2\left(g\right)$