Question

Write the chemical equation when Lead nitrate is heated.

Answer 1

Action of heat on Lead nitrate :

Decomposition of Lead nitrate: When Lead nitrate($\mathrm{Pb}\left({\mathrm{NO}}_3\right)2$) is heated it decomposes to form Lead oxide($\mathrm{PbO}$), Nitrogen dioxide(${\mathrm{NO}}_2$) and oxygen(${\mathrm{O}}_2$).

$2\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2\left(\mathrm{s}\right)\stackrel{∆}{\to }2\mathrm{PbO}\left(\mathrm{s}\right)+4{\mathrm{NO}}_2\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)$

So Lead nitrate upon heating decomposes to yellow Lead oxide with the evolution of brown Nitrogen dioxide and colorless oxygen gases.