Question

When lead nitrate is heated, it produces

• A. $N{O}_2$
• B. $NO$
• C. $N_2{O}_5$
• D. $N_{2}O$

Answer 1

Answer: (A)

Heating effect of nitrates
I. $Na,K,Rb,Cs$, Fr nitrate
$\stackrel{\Delta }{\to }$ metal nitrate $+O_2$
$2KN{O}_3\stackrel{\Delta }{\to }2KN{O}_2+2O_2$
II. $N{H}_{4}N{O}_3\stackrel{\Delta }{\to }{N}_{2}O+2H_{2}O$
III. $AgN{O}_3\stackrel{\Delta }{\to }Ag+N{O}_2+O_2$
$Hg{\left(N{O}_3\right)}_2\stackrel{\Delta }{\to }Hg+N{O}_2+O_2$
IV. Rest nitrate $\stackrel{\Delta }{\to }$ rest oxide $+N{O}_2+O_2$ $\underset{\text{ lead nitrate }}{2Pb{\left(N{O}_3\right)}_2}\stackrel{\Delta }{\to }\underset{\text{ lead oxide }}{2PbO}+\underset{\text{ nitrogen dioxide }}{4N{O}_2}+O_2$