1.

Heat of combustion of gaseous isoprene (C_(5) H_(8)) CH_(2) = CH - C = underset(CH_(3))underset(|)(C) H_(2) to CO_(2) (g)& H_(2) O (l)is -3186 kJ/mole . Calculate the heat of formation and compare with bond energies. Calculate the resonance energy of isoprene. Given : Delta_(f) H (CO_(2) , g) = -393 .5kJ/mol , Delta_(f) H (H_(2) O , l) = -285.84 kJ/mol Bond energies ofC- H , C - C& C = C are 413 , 348 and 615 kJ . Heat of atomization of carbon and H_(2) are 718.4 and 435.8

Answer»

SOLUTION :`-30.06` kJ/mol


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