L'enthalpie de formation d'une espèce chimique est la variation d'enthalpie de la réaction qui forme 1 mole de cette espèce à partir des corps simples correspondants.
| Espèce | $\Delta H_f$ $(kJ)$ $25^oC$ $1 bar$ | |
| Aluminium | Al(s) | 0 |
| Al(g) | 326,4 | |
| Al3+(g) | 5483,17 | |
| Al3+(aq) | -531 | |
| Al2O3(s) | -1675,7 | |
| AlCl3(s) | -704,2 | |
| Antimoine | Sb(s) | 0 |
| SbH3(g) | 145,11 | |
| Argent | Ag(s) | 0 |
| Ag(g) | 284,55 | |
| Ag+(aq) | 105,58 | |
| AgBr(s) | -100,37 | |
| AgCl(s) | -127,07 | |
| Ag2O(s) | -31,05 | |
| AgNO3(s) | -124,39 | |
| Arsénique | As(s) | 0 |
| AsH3(g) | 66,44 | |
| Azote | N2(g) | 0 |
| N(g) | 472,70 | |
| NO(g) | 90,25 | |
| N2O(g) | 82,05 | |
| NO2(g) | 33,18 | |
| N2O4(g) | 9,16 | |
| N2O5(s) | -43,1 | |
| N2O5(g) | 11,3 | |
| HNO3(l) | -174,10 | |
| HNO3(aq) | -207,36 | |
| NO3 -(aq) | -205,0 | |
| NH3(g) | -46,11 | |
| NH3(aq) | -80,29 | |
| NH4 +(aq) | -132,51 | |
| NH2OH(s) | -114,2 | |
| HN3(l) | 264,0 | |
| HN3(g) | 294,1 | |
| N2H4(l) | 50,63 | |
| NH4NO3(s) | -365,56 | |
| NH4Cl(s) | -314,43 | |
| NF3(g) | -113 | |
| Baryum | Ba(s) | 0 |
| Ba2+(aq) | -537,64 | |
| BaO(s) | -553,5 | |
| BaCl2(s) | -858,6 | |
| Brome | Br2(l) | 0 |
| Br2(g) | 30,907 | |
| Br(g) | 111,88 | |
| Br -(g) | 219,07 | |
| Br -(aq) | -121,55 | |
| HBr(g) | -36,40 | |
| Cadmium | Cd(s) | 0 |
| Cd(g) | 112,01 | |
| Cd2+(aq) | -75,90 | |
| CdO(s) | -258,2 | |
| CdCO3(s) | -750,6 | |
| Césium | Cs(s) | 0 |
| Cs(g) | 76,06 | |
| Cs+(aq) | -258,28 | |
| Calcium | Ca(s) | 0 |
| Ca(g) | 178,2 | |
| Ca2+(aq) | -542,83 | |
| CaO(s) | -635,09 | |
| CaCO3(s) calcite | -1128,8 | |
| CaCO3(s) aragonite | -1127,8 | |
| CaF2(s) | -1167,3 | |
| CaCl2(s) | -748,1 | |
| CaBr2(s) | -682,8 | |
| CaSO4(s) | -1433 | |
| Ca3(PO4)2(s) | -4126 | |
| Carbone | C(s) | 0 |
| C(g) | 716,68 | |
| CO(g) | -110,53 | |
| CO2(g) | -393,51 | |
| CO2(aq) | -413,80 | |
| H2CO3(aq) | -699,65 | |
| HCO3 -(aq) | -691,99 | |
| CO3 2-(aq) | -677,14 | |
| CCl4(l) | -135,44 | |
| CS2(l) | -89,70 | |
| HCN (g) | 135,1 | |
| HCN (l) | 108,87 | |
| CN -(aq) | 150,6 | |
| CH4(g) méthane | -75 | |
| C2H2(g) éthyne | 226,73 | |
| C2H4(g) éthène | 52,26 | |
| C2H6(g) éthane | -84,68 | |
| C3H6(g) propène | 20,42 | |
| C3H6(g) cyclopropane | 53,30 | |
| C3H8(g) propane | -103,85 | |
| C4H10(g) butane | -126,15 | |
| C5H12(g) pentane | -146,44 | |
| C5H12(l) pentane | -46,44 | |
| C6H6(g) benzène | 82,93 | |
| C6H6(l) benzène | 49,0 | |
| C6H12(l) cyclohexane | -156 | |
| C6H14(l) hexane | -156 | |
| C7H16(g) heptane | -224,4 | |
| C8H18(l) octane | -249,9 | |
| CH3OH(l) méthanol | -238,66 | |
| CH3OH(g) méthanol | -200,66 | |
| C2H5OH(l) éthanol | -277,69 | |
| C2H5OH(g) éthanol | -235,10 | |
| C6H5OH(s) phénol | -165,0 | |
| HCHO(g) méthanal | -108,57 | |
| CH3CHO(l) éthanal | -192,30 | |
| CH3CHO(g) éthanal | -166,19 | |
| CH3COCH3(l) propanone | -248,1 | |
| HCOOH(l) méthanoïque | -424,72 | |
| CH3COOH(l) éthanoïque | -484,5 | |
| CH3COOH(aq) éthanoïque | -485,76 | |
| CH3COO -(aq) éthanoate | -486,01 | |
| HOOCCOOH (s) éthanedioïque | -827,2 | |
| C6H5COOH(s) ac. benzoïque | -385,1 | |
| CH3CH(OH)COOH(s) ac. lactique | -694,0 | |
| CH3COOC2H5 éthanoate d'éthyle | -479,0 | |
| Chlore | Cl2(g) | 0 |
| Cl(g) | 121,68 | |
| Cl -(g) | -233,13 | |
| HCl(g) | -92,31 | |
| HCl(aq) | -167,16 | |
| Chrome | Cr(s) | 0 |
| Cr(g) | 396,6 | |
| CrO4 2-(aq) | -881,15 | |
| Cr2O7 2-(aq) | -1490,3 | |
| Cuivre | Cu(s) | 0 |
| Cu(g) | 338,32 | |
| Cu+(aq) | -71,67 | |
| Cu2+(aq) | 64,77 | |
| Cu2O(s) | -168,6 | |
| CuO(s) | -157,3 | |
| CuSO4(s) | -771,36 | |
| CuSO4·H2O(s) | -1085,8 | |
| CuSO4·5H2O(s) | -2279,7 | |
| Étain | Sn(s) | 0 |
| Sn(g) | 302,1 | |
| Sn2+(aq) | -8,8 | |
| SnO(s) | -285,8 | |
| SnO2(s) | -580,7 | |
| Fer | Fe(s) | 0 |
| Fe(g) | 416,3 | |
| Fe2+(aq) | -89,1 | |
| Fe3+(aq) | -48,5 | |
| Fe2O3(s) | -824,2 | |
| Fe3O4(s) | -1118,4 | |
| FeS(s) | -100,0 | |
| FeS2(s) | -178,2 | |
| Fluor | F2(g) | 0 |
| F(g) | 78,99 | |
| F -(aq) | -332,63 | |
| HF(g) | -271,1 | |
| Hydrogène | H2(g) | 0 |
| H(g) | 217,97 | |
| H+(aq) | 0 | |
| H2O(g) | -241,82 | |
| H2O(l) | -285,83 | |
| H2O2(l) | -187,78 | |
| Iode | I2(s) | 0 |
| I2(g) | 62,44 | |
| I(g) | 106,84 | |
| I -(aq) | -55,19 | |
| HI(g) | 26,48 | |
| Lithium | Li(s) | 0 |
| Li(g) | 159,37 | |
| Li+(aq) | -278,49 | |
| Magnésium | Mg(s) | 0 |
| Mg(g) | 113,10 | |
| Mg2+(aq) | -466,85 | |
| MgO(s) | -601,70 | |
| MgCO3(s) | -1095,8 | |
| MgCl2(s) | -641,32 | |
| Mg(OH)2(s) | -925 | |
| Mercure | Hg(l) | 0 |
| Hg(g) | 61,32 | |
| Hg2+(aq) | 171,1 | |
| Hg22+(s) | 172,4 | |
| HgO(s) | -90,83 | |
| Hg2Cl2(s) | -265,22 | |
| HgCl2(s) | -224,3 | |
| HgS(s) | -53,6 | |
| Or | Au(s) | 0 |
| Au(g) | 366,1 | |
| Oxygène | O2(g) | 0 |
| O(g) | 249,17 | |
| O3(g) | 142,7 | |
| OH -(aq) | -229,99 | |
| Phosphore | P4(s) | 0 |
| P(g) | 314,64 | |
| P4(g) | 58,91 | |
| PH3(g) | 5,4 | |
| PCl3(g) | -287,0 | |
| PCl3(l) | -319,7 | |
| PCl5(g) | -374,9 | |
| PCl5(s) | -443,5 | |
| H3PO3(s) | -964,4 | |
| H3PO3(aq) | -964,8 | |
| H3PO4(s) | -1279,0 | |
| H3PO4(l) | -1266,9 | |
| H3PO4(aq) | -1277,4 | |
| PO4 3-(aq) | -1279,0 | |
| P4O10(s) | -2984,0 | |
| Plomb | Pb(s) | 0 |
| Pb(g) | 195,0 | |
| Pb2+(aq) | -1,7 | |
| PbO(s) | -218,99 | |
| PbO2(s) | -277,4 | |
| Potassium | K(s) | 0 |
| K(g) | 89,24 | |
| K+(g) | 514,26 | |
| K+(aq) | -252,38 | |
| KOH(s) | -424,76 | |
| KF(s) | -567,27 | |
| KCl(s) | -436,75 | |
| KBr(s) | -393,80 | |
| KI(s) | -327,90 | |
| Silicium | Si(s) | 0 |
| Si(g) | 455,6 | |
| SiO2(s) | -910,94 | |
| SiCl4(l) | -687 | |
| Sodium | Na(s) | 0 |
| Na(g) | 107,32 | |
| Na+(aq) | -240,12 | |
| NaOH(s) | -425,61 | |
| NaCl(s) | -411,15 | |
| NaBr(s) | -361,06 | |
| NaI(s) | -287,78 | |
| Soufre | S8(s) | 0 |
| S(g) | 278,81 | |
| S2(g) | 128,37 | |
| S 2-(aq) | 33,1 | |
| SO2(g) | -296,83 | |
| SO3(g) | -395,72 | |
| H2SO4(l) | -813,99 | |
| H2SO4(aq) | -909,27 | |
| SO4 2-(aq) | -909,27 | |
| HSO4 -(aq) | -887,34 | |
| H2S(g) | -20,63 | |
| H2S(aq) | -39,7 | |
| HS -(aq) | -17,6 | |
| SF6(g) | -1209 | |
| Zinc | Zn(s) | 0 |
| Zn(g) | 130,73 | |
| Zn2+(aq) | -153,89 | |
| ZnO(s) | -348,28 |
d'après: P.W. Atkins, Physical Chemistry, fourth edition, Oxford University Press, 1990, ISBN 0-19-855283-1