CHXI11:THE P-BLOCK ELEMENTS
317041
Which one of the gas dissolves in \(\mathrm{H}_{2} \mathrm{SO}_{4}\) to give oleum?
1 \(\mathrm{SO}_{2}\)
2 \(\mathrm{H}_{2} \mathrm{~S}\)
3 \(\mathrm{S}_{2} \mathrm{O}\)
4 \(\mathrm{SO}_{3}\)
Explanation:
\(\mathrm{H}_{2} \mathrm{SO}_{4}+\mathrm{SO}_{3} \rightarrow \mathrm{H}_{2} \mathrm{~S}_{2} \mathrm{O}_{7}\)