pBlock ElementsII 1 Question 40
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40. A gas that cannot be collected over water is
======= ####40. A gas that cannot be collected over water is
3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed (a) $\mathrm{N}_{2}$
(b) $\mathrm{O}_{2}$
(c) $\mathrm{SO}_{2}$
(d) $\mathrm{PH}_{3}$
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Solution:
- $\mathrm{SO}{2}$ cannot be collected over water because it reacts with water forming $\mathrm{H}{2} \mathrm{SO}_{3}$.
$$ \mathrm{SO}{2}+\mathrm{H}{2} \mathrm{O} \longrightarrow \mathrm{H}{2} \mathrm{SO}{3} $$
