pBlock ElementsII 1 Question 22
22. Which gas is evolved when $\mathrm{PbO}{2}$ is treated with concentrated $\mathrm{HNO}{3}$ ?
(2005)
(a) $\mathrm{NO}_{2}$
(b) $\mathrm{O}_{2}$
(c) $\mathrm{N}_{2}$
(d) $\mathrm{N}_{2} \mathrm{O}$
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Solution:
- $\mathrm{PbO}{2}+\mathrm{HNO}{3} \longrightarrow \mathrm{Pb}\left(\mathrm{NO}{3}\right){2}+\mathrm{H}{2} \mathrm{O}+\mathrm{O}{2}$
