Question

7. A colourless salt 'X' when heated produces a yellow residue 'Y', with the
evolution of brown fumes 'Z'.
a) Identify X, Y and Z.
b) Name the type of reaction that takes place.
c) Write a balanced chemical equation for the reaction.​

Answer 1

Answer:

The colorless lead salt will be lead nitrate Pb(NO3)2. On heating, it forms lead oxide & brown fumes of NO2 gas liberate.

The equation is given by,

2Pb(NO3)2⟶2PbO+4NO2↑+O2