From the given reactions \[ \mathrm{S}(\mathrm{s})+\frac{3}{2} \mathrm{O}_{2}(\mathrm{~g}) \long....
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0From the given reactions
\[
\mathrm{S}(\mathrm{s})+\frac{3}{2} \mathrm{O}_{2}(\mathrm{~g}) \longrightarrow \mathrm{SO}_{3}(\mathrm{~g})+2 \mathrm{x} \mathrm{kcal}
\]
\( \mathrm{P} \)
and \( \mathrm{SO}_{2}(\mathrm{~g})+\frac{1}{2} \mathrm{O}_{2}(\mathrm{~g}) \longrightarrow \mathrm{SO}_{3}(\mathrm{~g})+\mathrm{y} \mathrm{kcal} \), the heat of formation of \( \mathrm{SO}_{2} \) is:
(1) \( (x+y) \)
(2) \( (x-y) \)
(3) \( (2 x+y) \)
(4) \( (2 x-y) \)
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