Calculate enthalpy for formation of ethylene from the following data \text{ (I) } {\C}_{\text{(graphite) }}+ {\O}_2(g) \to {\CO}_2(g) ;∆ H=393.5 {\kJ} (II) {\H}_2(g)+\frac{1}{2} {\O}_2(g) \to {\H}_2 {\O}(l);∆ H=-286.2 {\kJ} (III) {\C}_2 {\H}_4(g)+3 {\O}_2(g) \to 2 {\CO}_2(g)+2 {\H}_2 {\O}(l);∆ H=-1410.8 {\kJ}

EAMCET Engineering 2007 Solved Paper

Section: Chemistry

Question : 46 of 160

Marks: +1, -0

Calculate enthalpy for formation of ethylene from the following data
‌ (I) ‌‌C‌(graphite) ‌+O2(g)→CO2(g);‌∆H=393.5‌kJ
(II) H2(g)+‌

O2(g)→H2O(l);∆H=−286.2‌kJ
(III) C2H4(g)+3O2(g)→2CO2(g)+2H2O(l);∆H=−1410.8‌kJ

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