Question

Write the balanced chemical equation when lead nitrate is heated in test tube

Answer 1

Answer:

PB(NO3)2--->PbO+NO2+NO3

Explanation:

Decomposition reaction

Answer 2

Nitrate are normal salt of motivation nitric acid formed by replacement in the molecule of acid by a metal ion.

Lead is transition metal with valency +2.

So, to be stable like nearest noble gas it needs two electrons.

Nitrate is the negative radical with valence -1 .

When lead reacts with nitrate radical it forms lead nitrate. Since, the valency of lead is +2 it will need two nitrate radical.

Lead nitrate is formed by reacting lead with nitric acid, so by displacement reaction it forms, lead nitrate ,water and nitrigon di oxide.

When lead nitrate is heated, it due to thermal decomposition gives out metal oxide, oxygen and nitrogen dioxide.

Lead gives out a yellow buff coloured residue lead oxide with a reddish brown gas nitrogen dioxide.