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Given \( \mathrm{C}_{(\mathrm{s})}+\mathrm{O}_{2(\mathrm{~g})} \rightarrow \mathrm{CO}_{2(\mathrm{~g})} ; \Delta \mathrm{H}=-94.2 \mathrm{kCal} \)
P \( \mathrm{H}_{2(\mathrm{~g})}+1 / 2 \mathrm{O}_{2(\mathrm{~g})} \rightarrow \mathrm{H}_{2} \mathrm{O}_{(\mathrm{g})} ; \Delta \mathrm{H}=-68.3 \mathrm{kCal} \)

W \( \mathrm{CH}_{4(\mathrm{~g})}+2 \mathrm{O}_{2(\mathrm{~g})} \rightarrow \mathrm{CO}_{2(\mathrm{~g})}+2 \mathrm{H}_{2} \mathrm{O}_{(\mathrm{g})} ; \Delta \mathrm{H}=-210.8 \)
\( \mathrm{kCal} \)
What will be heat of formation of \( \mathrm{CH}_{4} \) in ( \( \left.\mathrm{k} \mathrm{Cal}\right) \) ?
(1) +45.9
(2) -20.0
(3) +47.8
(4) -47.3
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