Which yellow solid residue is formed on thermal decomposition of lead nitrate?
Answer and explanation
Correct answer: Lead(II) oxide
On heating, lead nitrate undergoes thermal decomposition: \(2\mathrm{Pb(NO_3)_2} \xrightarrow{\Delta} 2\mathrm{PbO} + 4\mathrm{NO_2} + \mathrm{O_2}\). The yellow solid residue is lead(II) oxide, \(\mathrm{PbO}\). In contrast, lead(II) chloride contains chloride ions, which cannot be formed by merely heating lead nitrate.
Frequently asked questions
What is the correct answer to this question?
Lead(II) oxide
Why is this the correct answer?
On heating, lead nitrate undergoes thermal decomposition: \(2\mathrm{Pb(NO_3)_2} \xrightarrow{\Delta} 2\mathrm{PbO} + 4\mathrm{NO_2} + \mathrm{O_2}\). The yellow solid residue is lead(II) oxide, \(\mathrm{PbO}\). In contrast, lead(II) chloride contains chloride ions, which cannot be formed by merely heating lead nitrate.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
