Question

2g of lead nitrate is heated in a boiling tube.
a) state the colour of the salt before and after heating and the colour of fumes evolved.
b) write the balanced chemical equation and mention its type.

Answer 1

a) Color of lead nitrate before heating- White
Color of lead nitrate after heating- Yellow
Color of fumes- Reddish brown

b) 2Pb(NO3)2 ------› 2PbO + 4NO2 + O2

This is a decomposition reaction.



I hope this will help you.

Answer 2

a. colour of lead nitrate

before heating - white

after heating - reddish brown

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