On heating lead nitrate forms oxides of nitrogen and lead. The oxides formed are:
A student while heating solid lead nitrate taken in a test-tube would observe : (1) white residue of PbO2 (2) green residue of NO2 (3) yellow residue of PbO (4) brown residue of NO
Which one is correct?
Pb(NO3)2----->PbO+2NO2+O2
or
2Pb(NO3)2----->2PbO+4NO2+O2