Question

Heating of Pb(NO3)2 gives two gases 'X' and 'Y'.The colour of X and Y is

Answer 1

Answer:

NO2 and O2

When lead nitrate is heated strongly, NO2 and O2 are given out.

2Pb(NO3)2 (s) ------> 2PbO (s)  +  4NO2 (g)  +  O2 (g)

In this decomposition reaction, the colorless compound lead nitrate forms a yellow compound, lead monoxide, and brown fumes of nitrogen dioxide gas are evolved.

Since the decomposition of lead nitrate is brought about by heat, it is actually an example of thermal decomposition.