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  4. The heat of hydrogenation of CH2=CH2 is 30 kcal/mol, what is the heat of hydrogenation of 1, 3 butadiene?

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Q. The heat of hydrogenation of $ C{{H}_{2}}=C{{H}_{2}} $ is 30 kcal/mol, what is the heat of hydrogenation of 1, 3 butadiene?

CMC MedicalCMC Medical 2012

Solution:

The heat of hydrogenation of 1, 3-butadiene is 57 kcal/mol due to the - conjugation in 1, 3-butadiene.