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Using values of the mean bond enthalpies estimate the standard enthalpy of formation of (a) gaseous...

Using values of the mean bond enthalpies estimate the standard enthalpy of formation of (a) gaseous cyclohexane and (b) gaseous benzene (assuming that benzene contains 3 C-C, 3 C=C and 6 C-H bonds). Compare calculated values with actual values of -123.2 and 82.9 kJ/mol, respectively (C-C =368KJ/mol) (C=C =724KJ/mol) (C-H =414KJ/mol)

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