Question

A colourless substance X on heating decomposes.
to give a yellow colour residue Y, and evolution of brown colour gas, and other gas supports
combustion.
- a- Identify X and Y
- b- Name the gases evolved.
- c- write the chemical reaction involved
​

Answer 1

Answer: Substance X - Lead nitrate.....

Substance Y - Lead Oxide (PbO)

Lead nitrate + Heat ----> Lead Oxide + Nitrogen dioxide + Oxygen

Explanation: