Question

A white coloured compound is heated in a test tube, brown fumes comes out and a brown residue is left behind. (a) name the chemical which gives brown fumes (b) name the compound which gives brown residue. (c) write balanced chemical equation (d) identify the type of reaction.

Answer 1

Answer:

leadnitrate on heating gives brown fumes

Explanation:

It gives yellow residue.

It is thermal decomposition.

2Pb(NO3)2 on heating gives 2PbO+4NO2+O2 is the equation

Hope this helps you........

Answer 2

Answer:

a)Lead nitrate Pb(NO3)2

b)NO2

c)Equation:

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

d)Thermolytic decomposition