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Calculate of heat of formation of ethylene from the following data at 20^(@)C : H_(2)(g)+(1)/(2)O_(2)(g) to H_(2)O(l),DeltaH=-65 kcal C(s)+O_(2)(g) to CO_(2)(g),DeltaH=-97 kcal C_(2)H_(4)(g)+3O_(2)(g) to 2CO_(2)(g)+2H_(2)O(l), DeltaH=-340 kcal |
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