Question

how to find heat of hydrogenation of ethylene
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Answer 1

Answer:

Thermodynamics. Compute the enthalpy of hydrogenation of ethylene if the bond enthalpies of H – H, C – H, C – C and C = C bonds are 436, 485, 347 and 619 kJ mol–1 respectively. Thus enthalpy of hydrogenation of ethylene is -262 kJ.

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Answer 2

Answer:

Explanation:

Heat of hydrogenation = heat of

combustion of ethylene + heat of

combustion of hydrogen - heat of combustion of ethane

Heat of hydrogenation = −337+(−68.4)−(−373) = −32.4kcal

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