Write a balanced equation for the combustion of CH3C6H13(l) (methyl hexane) -- i.e. its reaction with O2(g) forming the products CO2(g) and H2O(l). Given the following standard heats of formation: ΔHf° of CO2(g) is -393.5 kJ/mol ΔHf° of H2O(l) is -286 kJ/mol ΔHf° of CH3C6H13(l) is -173.0 kJ/mol What is the standard heat of reaction (ΔH°) for the combustion reaction of CH3C6H13(l)?

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter4: Energy And Chemical Reactions
Section4.7: Where Does The Energy Come From?
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Write a balanced equation for the combustion of CH3C6H13(l) (methyl hexane)
-- i.e. its reaction with O2(g) forming the products CO2(g) and H2O(l).

Given the following standard heats of formation:

  • ΔHf° of CO2(g) is -393.5 kJ/mol
  • ΔHf° of H2O(l) is -286 kJ/mol
  • ΔHf° of CH3C6H13(l) is -173.0 kJ/mol


What is the standard heat of reaction) for the combustion reaction of CH3C6H13(l)?

Calculate the difference, ΔHE(PV) for the combustion reaction of 1 mole of methyl hexane.
(Assume standard state conditions and 298 K for all reactants and products.)

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