Calculate enthalpy for formation of ethylene from the following data
(I) \(\mathrm{C}_{\text {(graphite) }}+\mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g})\)
\(\Delta H=393.5 \mathrm{~kJ}\)
(II) \(\mathrm{H}_2(g)+\frac{1}{2} \mathrm{O}_2(g) \longrightarrow \mathrm{H}_2 \mathrm{O}(l)\);
\(\Delta U=-256.2 \mathrm{~kJ}\)
(III) \(\begin{array}{r}\mathrm{C}_2 \mathrm{H}_4(g)+3 \mathrm{O}_2(g) \rightarrow 2 \mathrm{CO}_2(g)+2 \mathrm{H}_2 \mathrm{O}(l) ; \\ \Delta H=-1410.8 \mathrm{~kJ}\end{array}\)

1. A \(54.1 \mathrm{~kJ}\)
2. B \(44.8 \mathrm{~kJ}\)
3. C \(51.4 \mathrm{~kJ}\)
4. D \(48.4 \mathrm{~kJ}\)