Calculate ? H rxn for the combustion of octane (C 8 H 18 ), a component of

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Calculate ? H rxn for the combustion of octane (C ₈H ₁₈), a component of gasoline, by using average bond energies.

Calculate ? H rxn for the combustion of octane by using enthalpies of formation from Appendix IIB in the textbook. The standard enthalpy of formation of C ₈H ₁₈ is -250 kJ/mol.

What is the percent difference between the two results?

Which result would you expect to be more accurate?

The value calculated from the heats of formation

The value calculated from the average bond energies

Related Book For answer-question

Thermodynamics for Engineers

ISBN: ?978-1133112860

1st edition

Authors: Kenneth A. Kroos, Merle C. Potter

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Posted Date: May 03, 2019 01:52 AM

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Calculate ? H rxn for the combustion of octane (C 8 H 18 ), a component of

Question:

(8)0²H6+(3)³008 ←(8) ²0+ (1) ³H³) (8)0²H6+(3)³008 ←(8) ²0+ (1) ³H³)

Expert Answer:

Combustion of liquid octane is as follows The standard enthalpy of reaction c... View the full answer

Thermodynamics for Engineers

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