chapter 7. ELEMENTS OF GROUPS 16, 17 AND 18 class 12 chemistry textbook solution
3. Answer the following.
iv. What happens when a. Lead sulfide reacts with ozone (O3).
b. Nitric oxide reacts with ozone.
Answer:-
a. When lead sulfide (PbS) reacts with ozone (O3), the following chemical reaction can occur:
2PbS(s) + 5O3(g) → 2PbSO4(s) + 5O2(g)
In this reaction, lead sulfide (PbS) reacts with ozone (O3) to produce lead sulfate (PbSO4) and oxygen gas (O2). This reaction involves the oxidation of lead sulfide to lead sulfate by ozone, releasing oxygen gas as a byproduct. Lead sulfide is being oxidized in this process, while ozone serves as the oxidizing agent.
b. When nitric oxide (NO) reacts with ozone (O3), the following chemical reaction can occur:
NO(g) + O3(g) → NO2(g) + O2(g)
In this reaction, nitric oxide (NO) reacts with ozone (O3) to produce nitrogen dioxide (NO2) and oxygen gas (O2). This is a redox reaction in which nitric oxide is oxidized to nitrogen dioxide, and ozone is reduced to oxygen gas. Nitrogen dioxide is a reddish-brown gas, and this reaction is one of the processes that can contribute to the formation of atmospheric nitrogen dioxide, which is an important component of air pollution and smog.