In the thermal decomposition of lead nitrate, in which form is energy supplied?
Answer and explanation
Correct answer: Heat
On heating, lead nitrate decomposes: \(2\mathrm{Pb(NO_3)_2} \xrightarrow{\Delta} 2\mathrm{PbO} + 4\mathrm{NO_2} + \mathrm{O_2}\). Since heat is supplied to initiate the reaction, it is called a thermal decomposition reaction. Decomposition caused by electrical energy is electrolysis, which is not involved here.
Frequently asked questions
What is the correct answer to this question?
Heat
Why is this the correct answer?
On heating, lead nitrate decomposes: \(2\mathrm{Pb(NO_3)_2} \xrightarrow{\Delta} 2\mathrm{PbO} + 4\mathrm{NO_2} + \mathrm{O_2}\). Since heat is supplied to initiate the reaction, it is called a thermal decomposition reaction. Decomposition caused by electrical energy is electrolysis, which is not involved here.
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.
