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Standard enthalpy of formation, Gibbs energy of formation, entropy and molar heat capacity of organic substances

The standard enthalpy of formation, Gibbs energy of formation, entropy and molar heat capacity are tabulated for more than hundred organic substances.

ΔH°f : The standard enthalpy of formation at 25°C (298,15 K) for 1 mol of the substance in its given state (g= gas and l= liquide) from its elements in their standard state (stable forms at 1 bar and 25°C)

ΔG°f : The standard Gibbs free energy of formation at 25°C (298,15 K) for 1 mol of the substance in its given state (g= gas and l= liquide) from its elements in their standard state (stable forms at 1 bar and 25°C)

S°: The standard entropy for 1 mol of the substance in its given state (g= gas and l= liquide) at 1 bar and 25°C

Cp : The standard molar specific heat capacity of the substance in its given state (g= gas and l= liquide) at constant pressure and 25°C

See also Thermodyamics key values internationally agreed , and Standard state and enthalpy of formation, Gibbs free energy of formation, entropy and heat capacity for ΔH°f, ΔG°f, S° and Cp for more than 370 inorganic substances and gases , common liquids and fluids , food and foodstuff , metals and semimetals , common solids and other common substances for tabulated values of specific heat capacity, cp .

Standard enthalpy of formation, Gibbs energy of formation, entropy and molar heat capacity of organic substances
Substance Brutto formula ΔH°f @25°C
kJ/mol
ΔG°f @25°C
kJ/mol
S° @25°C
J/(mol K)
Cp @25°C
J/(mol K)
Bromoform (g) CHBr3 25 16 331 71
Chloroform (l) CHCl3 -134.1 -73.7 201.7 114.2
Chloroform (g) CHCl3 -102.7 6.0 295.7 65.7
Formic acid (l) CH2O 2 -425 -361.4 129 99
Formic acid (g) CH2O 2 -378.7
Methyl (g) CH3 145.7 47.9 194.2 38.7
Bromomethane (l) CH3 Br -59.8
Bromomethane (g) CH3 Br -35.4 -26.3 246.4 42.4
Chloromethane (g) CH3 Cl -81.9 -63 234.6 40.8
Fluormethane (g) CH3 F -234 -210 222.9 37.5
Iodomethane (l) CH3 I -13.6 136.2 126
Iodomethane (g) CH3 I 14.4 16 254.1 44.1
Nitromethane (l) CH3 NO 2 -112.6 -14.4 171.8 106.6
Nitromethane (g) CH3 NO2 -80.8 -7 282.9 55.5
Methane (g) CH 4 -74.6 -50.5 186.3 35.7
Methanol (l) CH 4 O -239.2 -166.6 126.8 81.1
Methanol (g) CH 4 O -201 -162.3 239.9 44.1
Methylamine (l) CH5 N -47.3 35.7 150.2 102.1
Methylamine (g) CH5 N -22.5 32.7 242.9 50.1
Ethyne (acetylene) (g) C2H 2 226.9 209 201 44
Ethene (g) C2H 4 52.5 68.4 219.3 42.9
Acetic acid (l) C2H4O 2 -484.3 -389.9 159.8 123.3
Acetic acid (g) C2H4O 2 -432.2 -374.2 283.5 63.4
Bromoethane (l) C2H5 Br -90.5 -25.8 198.7 100.8
Bromoethane (g) C2H5 Br -61.9 -23.9 286.7 64.5
Chloroethane (l) C2H5 Cl -136.8 -59.3 190.8 104.3
Chloroethane (g) C2H5 Cl -112.1 -60.4 276 62.8
Nitroethane (l) C2H5 NO 2 -143.9 134.4
Nitroethane (g) C2H5 NO 2 -103.8 -5 320.5 79
Ethane (g) C2H6 -84 -32 229.2 52.5
Ethanol (l) C2H6 O -277.6 -174.8 160.7 112.3
Ethanol (g) C2H6 O -234.8 -167.9 281.6 65.6
Methoxymethane (l) C2H6 O -203,3
Methoxymethane (g) C2H6 O -184.1 -112.6 266.4
Ethylamine (l) C2H 7 N -74.1 130
Ethylamine (g) C2H 7 N -47.5 36.3 283.8 71.5
Cyclopropene (g) C3 H 4 277.1 286 244 53
Propyne (g) C3 H 4 185 194 248 61
Cyclopropane (l) C3 H6 35.2
Cyclopropane (g) C3 H6 53.3 104.5 237.5 55.6
Propene (g) C3 H6 20 62 267 64
Acetone (l) C3 H6 O -248.4 199.8 126.3
Acetone (g) C3 H6 O -217.1 -152.7 295.3 74.5
Propanoic acid (l) C3 H6 O 2 -510.7 191 152.8
Propanoic acid (g) C3 H6 O 2 -455.7
Propane (l) C3 H 8 -120.9
Propane (g) C3 H 8 -103.8 -23.4 270.3 73.6
1-Propanol (l) C3 H 8 O -302.6 193.6 143.9
1-Propanol (g) C3 H 8 O -255.1 322.6 85.6
2-Propanol (l) C3 H 8 O -318.1 181.1 156.5
2-Propanol (g) C3 H 8 O -272.6 309.2 89.3
1-Propanamine (g) C3 H 9 N -72 40 324
1-Butyne (l) C 4 H6 141.4
1-Butyne (g) C 4 H6 165.2 202 291 81
2-Butyne (l) C 4 H6 119.1
2-Butyne (g) C 4 H6 145.7 185 283 78
Cyclobutene (g) C 4 H6 156.7 175 64 64
2-Methyl-1-propene (g) C 4 H 8 -17 58 294 89
1-Butene (l) C 4 H 8 -20.8 227 118
1-Butene (g) C 4 H 8 0.1 71 306 86
Cyclobutane (l) C 4 H 8 3.7
Cyclobutane (g) C 4 H 8 27.7 110 265 nd
Butanoic acid (l) C 4 H 8 O 2 -533.8 222.2 178.6
Butanoic acid (g) C 4 H 8 O 2 -475.9
2-Methylpropane (g) C 4 H 10 -135 -21 295 97
Butane (l) C 4 H 10 -147.3 140.9
Butane (g) C 4 H 10 -125.7 -17 310 98
1-Butanol (l) C 4 H 10 O -327.3 225.8 177.2
1-Butanol (g) C 4 H 10 O -274.9
2-Butanol (l) C 4 H 10 O -342.6 214.9 196.9
2-Butanol (g) C 4 H 10 O -292.8 359.5 112.7
1-Pentyne (g) C5 H 8 144 210 330 105
2-Pentyne (g) C5 H 8 129 194 332 99
Cyclopentene (l) C5 H 8 4.3 201.2 122.4
Cyclopentene (g) C5 H 8 34 111 290 75
1-Pentene (l) C5 H 10 -46.9 262.6 154
1-Pentene (g) C5 H 10 -21.1 79 346 110
2-Methyl-1-butene (g) C5 H 10 -35.2 66 340 112
2-Methyl-1-butene (l) C5 H 10 -61.1 254 157.2
Cyclopentane (l) C5 H 10 -105.1 204.5 128.8
Cyclopentane (g) C5 H 10 -76.4 39 293 83
Pentanoic acid (l) C5 H 10 O 2 -559.4 259.8 210.3
Pentanoic acid (g) C5 H 10 O 2 -491.9
2,2-Dimethylpropane (g) C5 H 12 -166 -15 306 122
2-Methylbutane (g) C5 H 12 -155 -15 344 119
Pentane (l) C5 H 12 -173.5 167.2
Pentane (g) C5 H 12 -146.9 -8 349 120
1-Pentanol (l) C5 H 12 O -351.6 208.1
1-Pentanol (g) C5 H 12 O -294.6
2-Pentanol (l) C5 H 12 O -365.2
2-Pentanol (g) C5 H 12 O -311
3-Pentanol (l) C5 H 12 O -368.9 239.7
3-Pentanol (g) C5 H 12 O -314.9
Methyl tert-butyl ether(l) C5 H 12 O -313.6 265.3 187.5
Methyl tert-butyl ether(g) C5 H 12 O -283.7
Benzene (l) C6H6 49.1 124.5 173.4 136
Benzene (g) C6H6 82.9 129.7 269.2 82.4
Aniline (l) C6H7N 191.9
Aniline (g) C6H7N 87.5 -7 317.9 107.9
1-Hexyne (g) C6H10 124 219 369 128
Cyclohexene (l) C6H10 -28.5 214.6 148.3
Cyclohexene (g) C6H10 -5 107 311 105
1-Hexene (l) C6H12 -74.2 295.2 183.3
1-Hexene (g) C6H12 -43.5 87 385 132
2-Methyl-1-pentene (g) C6H12 -59.4
2-Methyl-1-pentene (l) C6H12 -90
Cyclohexane (l) C6H12 -156.4 154.9
Cyclohexane (g) C6H12 -123.4 32 298 106
Methylcyclopentane(g) C6H12 -106.2
Methylcyclopentane(l) C6H12 -137.9
Hexanoic acid (l) C6H12O2 -583.8
Hexanoic acid (g) C6H12O2 -511.9
2,2-Dimethylbutane(g) C6H14 -185.9 -10 358 142
2,2-Dimethylbutane(l) C6H14 -213.8 272.5 191.9
2-Methylpentane (g) C6H14 -174.6 -5 381 144
2-Methylpentane (l) C6H14 -204.6 290.6 193.7
3-Methylpentane (g) C6H14 -171.9 -2 380 143
3-Methylpentane (l) C6H14 -202.4 292.5 190.7
Hexane (l) C6H14 -198.7 195.6
Hexane (g) C6H14 -166.9 -0.3 388 143
1-Hexanol (l) C6H14O -377.5 287.4 240.4
1-Hexanol (g) C6H14O 315.9
2-Hexanol (l) C6H14O -392
2-Hexanol (g) C6H14O -333.5
Phenol (s) C7H6O -165.1 144 127.4
Phenol (g) C7H6O -96.4 -33 316 104
Methylbenzene(l) C7H8 12.0 220 156
Methylbenzene(g) C7H8 50.0 122 321 104
1-Heptene (l) C7H14 -97.9 327.6 211.8
1-Heptene (g) C7H14 -62.3 96 424 15
Cycloheptane (l) C7H14 -156.6
Cycloheptane (g) C7H14 -118.1
Ethylcyclopentane (l) C7H14 -163.4 279.9
Ethylcyclopentane (g) C7H14 -126.9
Methylcyclohexane(g) C7H14 -154.7
Methylcyclohexane(l) C7H14 -190.1 184.8
Heptanoic acid (l) C7H14O2 -610.2 265.4
Heptanoic acid (g) C7H14O2 -536.2
2,2-Dimethylpentane (g) C7H16 -205.7
2,2-Dimethylpentane (l) C7H16 -238.3 300.3 221.1
2-Methylhexane (g) C7H16 -194.5
2-Methylhexane (l) C7H16 -229.5 323.3 222.9
3-Methylhexane (g) C7H16 -191.3
3-Methylhexane (l) C7H16 -226.4
Heptane (l) C7H16 -224.2 224.7
Heptane (g) C7H16 -187.6 8 428 166
1-Heptanol (l) C7H16O -403.3 272.1
1-Heptanol (g) C7H16O -336.5
Ethylbenzene (l) C8H10 -12.3 183.2
Ethylbenzene (g) C8H10 29.9 131 361 128
1-Octene (l) C8H16 -124.5 241
1-Octene (g) C8H16 -81.3 104 463 178
Cyclooctane (l) C8H16 -167.7
Cyclooctane (g) C8H16 -124.4
Ethylcyclohexane (l) C8H16 -212.1 280.9 211.8
Ethylcyclohexane (g) C8H16 -171.5
Octanoic acid (l) C8H16O2 -636 297.9
Octanoic acid (g) C8H16O2 -554.3
2-Methylheptane (g) C8H18 -215.3
2-Methylheptane (l) C8H18 -255 356.4 252
3-Methylheptane (g) C8H18 -212.5
3-Methylheptane(l) C8H18 -252.3 362.6 250.2
Octane (l) C8H18 -250.1 254.6
Octane (g) C8H18 -208.5 16 467 189
1-Octanol (l) C8H18O -426.5 305.2
1-Octanol (g) C8H18O -355.6
2,2-Dimethylhexane (g) C8H19 -224.5
2,2-Dimethylhexane (l) C8H19 -261.9
Propylcyclohexane (g) C9H1 -192 420 242
Propylbenzene (g) C9H12 8 137 401 154
1-Nonyne (l) C9H16 16.3
1-Nonyne (g) C9H16 62.3
Nonanoic acid (l) C9H18O2 -659.7 362.4
Nonanoic acid (g) C9H18O2 -577.3
2,2-Dimethylheptane(g) C 9 H 20 -246
2,2-Dimethylheptane(l) C 9 H 20 -288.1
Nonane (l) C 9 H 20 -274.7 284.4
Nonane (g) C 9 H 20 -228.2 25 506 212
1-Nonanol (l) C 9 H 20 O -453.4
1-Nonanol (g) C 9 H 20 O -376.5
Naphthalene (g) C 10 H 8 151 224 336
Butylbenzene (l) C 10 H 14 -63.2 321.2 243.4
Butylbenzene (g) C 10 H 14 -11.8
1-Decene (l) C 10 H 20 -173.8 425 300.8
1-Decene (g) C 10 H 20 -123.3 301
Butylcyclohexane (l) C 10 H 20 -263.1 345 271
Butylcyclohexane (g) C 10 H 20 -213.7
Decanoic acid (s) C 10 H 20 O 2 -713.7
Decanoic acid (l) C 10 H 20 O 2 -684.3
Decanoic acid (g) C 10 H 20 O 2 -594.9
2-Methylnonane (g) C 10 H 22 -260.2
2-Methylnonane (l) C 10 H 22 -309.8 420.1 313.3
Decane (l) C 10 H 22 -300.9 314.4
Decane (g) C 10 H 22 -249.5 33 545 235
1-Decanol (l) C 10 H 22 O -478.1 370.6
1-Decanol (g) C 10 H 22 O -396.6
1-Methylnaphthalene (l) C 11 H 10 56.3 254.8 224.4
2-Methylnaphthalene (s) C 11 H 10 44.9 220 196
2-Methylnaphthalene (g) C 11 H 10 106.7
1-Undecene (g) C 11 H 22 344.9
Undecane (l) C 11 H 24 -327.2 344.9
Undecane (g) C 11 H 24 -270.8 42 584 257
1-Undecanol (l) C 11 H 24 O -504.8
1-Dodecene (l) C 12 H 24 -226.2 484.8 360.7
1-Dodecene (g) C 12 H 24 -165.4
Dodecanoic acid (s) C 12 H 24 O 2 -774.6 404.3
Dodecanoic acid (l) C 12 H 24 O 2 -737.9
Dodecanoic acid (g) C 12 H 24 O 2 642
Dodecane (l) C 12 H 26 -350.9 375.8
Dodecane (g) C 12 H 26 -289.4 50 623 280
1-Dodecanol (l) C 12 H 26 O -528.5 438.1
1-Dodecanol (g) C 12 H 26 O -436.6
Anthracene (g) C 14 H 10 231
Phenantrene (g) C 14 H 10 207
Decylcyclopentane (l) C 15 H 30 -367.3
Decylbenzene (l) C 16 H 26 -218.3
Decylbenzene (g) C 16 H 26 -138.6
1-Hexadecene (l) C 16 H 32 -328.7 587.9 488.9
1-Hexadecene (g) C 16 H 32 -248.4
Hexadecanoic acid (s) C 16 H 32 O 2 -891.5 452.4 460.7
Hexadecanoic acid (l) C 16 H 32 O 2 -838.1
Hexadecanoic acid (g) C 16 H 32 O 2 -737.1
N-hexadecane (l) C 16 H 34 -456.1 501.6
N-hexadecane (g) C 16 H 34 -374.8
Chrysene (s) C 18 H 12 145.3
Chrysene (g) C 18 H 12 269.8

See also Standard state and enthalpy of formation, Gibbs free energy of formation, entropy and heat capacity for ΔH°f, ΔG°f, S° and Cp for more than 370 inorganic substances and gases , common liquids and fluids , food and foodstuff , metals and semimetals , common solids and other common substances for tabulated values of specific heat capacity, cp .

For conversion of units, use the Specific heat online unit converter.

The specific heat capacity can be calculated from the molar heat capacity, and vise versa:

cp = Cp / M    and

Cp = cp . M

where

cp = specific heat capacity

Cp = molar heat capacity

M = molar weight of the actual substance (g/mol).

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• The Engineering ToolBox (2017). Standard enthalpy of formation, Gibbs energy of formation, entropy and molar heat capacity of organic substances. [online] Available at: https://www.engineeringtoolbox.com/standard-enthalpy-formation-value-Gibbs-free-energy-entropy-heat-capacity-organic-d_1979.html [Accessed Day Month Year].

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