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Section: 5 | Heat of Combustion |
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The table 'Heat of Combustion of Selected Compounds' has one or more different columns and 907 more rows than appear in the book.
How to Cite this Reference
The recommended form of citation is:
John R. Rumble, ed., CRC Handbook of Chemistry and Physics, 103rd Edition (Internet Version 2022), CRC Press/Taylor & Francis, Boca Raton, FL.
If a specific table is cited, use the format: "Physical Constants of Organic Compounds," in CRC Handbook of Chemistry and Physics, 103rd Edition (Internet Version 2022), John R. Rumble, ed., CRC Press/Taylor & Francis, Boca Raton, FL.

HEAT OF COMBUSTION

The heat of combustion of a substance at 25 °C can be calculated from the enthalpy of formation (∆fH°) data in the table “Standard Thermodynamic Properties of Chemical Substances” in this section. We can write the general combustion reaction as

X + O2→CO2(g) + H2O (l) + other products 

For a compound containing only carbon, hydrogen, and oxygen, the reaction is simply

CaHbOc+(a+14b−12c)O2→a ​​​CO2 (g)+12b H2O (l)

and the standard heat of combustion ∆cH°, which is defined as the negative of the enthalpy change for the reaction (i.e., the heat released in the combustion process), is given by

ΔcHo=−aΔfHo(CO2,​ g)−12bΔfHo(H2O,​ l)+ΔfHo(CaHbOc)=393.51a+142.915b+ΔfHo(CaHbOc)

This equation applies if the reactants start in their standard states (25 °C and one atmosphere pressure) and the products return to the same conditions. The same equation applies to a compound containing another element if that element ends in its standard reference state (e.g., nitrogen, if the product is N2); in general, however, the exact products containing the other elements must be known in order to calculate the heat of combustion.

The following table gives the standard heat of combustion calculated in this manner for about 970 inorganic and organic compounds. Column definitions for the table are as follows.

Column heading Definition
Name Name of chemical; given in alphabetical order
Mol. Form. Chemical formula; written in Hill format
State Physical state of substance being combusted; liq = liquid; cry = crystalline; gas = gas
ΔfHº Standard heat of combustion at 25 °C and 1 atm pressure, in units kJ mol-1
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Heat of Combustion of Selected Compounds



NameSynonymMol. form.FormulaCAS Reg. No.Mol. wt.StateΔcHº/kJ mol-1ΔcHº/kJ g-1
Continued on next page...
Acenaphthene1,2-DihydroacenaphthyleneC12H10C12H1083-32-9154.207cry622240.35
AcenaphthyleneAcenaphthaleneC12H8C12H8208-96-8152.192cry605239.77
AcetaldehydeEthanalC2H4OCH3CHO75-07-044.052liq116726.48
AcetamideEthanamideC2H5NOCH3CONH260-35-559.067cry118520.06
AcetanilideN-PhenylacetamideC8H9NO103-84-4135.163cry422531.26
Acetic acidEthanoic acidC2H4O2CH3COOH64-19-760.052liq87414.56
Acetic anhydrideAcetyl acetateC4H6O3C4H6O3108-24-7102.089liq180717.70
Acetone2-PropanoneC3H6O(CH3)2CO67-64-158.079liq179030.81
Acetone cyanohydrinC4H7NOC4H7NO75-86-585.105liq245428.83
AcetonitrileMethyl cyanideC2H3NCH3CN75-05-841.052liq125630.61
AcetophenoneMethyl phenyl ketoneC8H8OC6H5C=OCH398-86-2120.149liq414934.53
AcetyleneEthyneC2H2HC≡CH74-86-226.037gas130049.94
2-(Acetyloxy)benzoic acidAcetylsalicylic acidC9H8O4C9H8O450-78-2180.158cry386921.48
9-AcridinamineAminacrineC13H10N290-45-9194.231cry670434.52
AcridineDibenzo[b,e]pyridineC13H9N260-94-6179.217cry658136.72
Acrylamide2-PropenamideC3H5NOC3H5NO79-06-171.078cry168323.68
Acrylic acid2-Propenoic acidC3H4O2C3H4O279-10-772.063liq136818.99
AcrylonitrilePropenenitrileC3H3NCH2=CHCN107-13-153.063liq175633.10
Adenine1H-Purin-6-amineC5H5N5C5H5N573-24-5135.128cry277920.57


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