Sarthaks Test
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Given the following data: ΔHf(C2H4) = 12.5 kcal

Heat of atomization of C = 171 kcal 

Bond energy of H2 = 104.2 kcal 

Bond energy of C – H bond = 99.3 kcal 

What is C = C bond energy?

a. 140.7 kcal 

b. 36 kcal 

c. 40 kcal 

d. 76 kcal 

1 Answer

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Correct option  (a) 140.7 kcal



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