A rough measure of the enthalpy of combustion of a hydrocarbon can be obtained by assuming that

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A rough measure of the enthalpy of combustion of a hydrocarbon can be obtained by assuming that all CC bonds contribute the same energy to the combustion process when broken, and that the same is true for all C-H bonds. This is particularly appropriate for alkanes and cycloalkanes, where all C-C bonds are roughly equivalent single bonds. Using this simple model, write a general formula for the combustion energy of an alkane with n carbon atoms and m hydrogen atoms in terms of two variables characterizing the energies of the two bond types. Fit for the two variables by matching with the energy of methane and dodecane, and compare the intermediate energies to those of?

Table 33.1

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The Physics of Energy

ISBN: 978-1107016651

1st edition

Authors: Robert L. Jaffe, Washington Taylor

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