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Standard enthalpy of formation
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===Inorganic substances=== {{sticky header}} {| class="wikitable sortable sticky-header" |- ! Species ! Phase ! Chemical formula ! data-sort-type=number| Ξ<sub>f</sub>''H''<sup>⦡</sup> /(kJ/mol) |- | [[Aluminium]] | Solid | Al | 0 |- | [[Aluminium chloride]] | Solid | AlCl<sub>3</sub> | β705.63 |- | [[Aluminium oxide]] | Solid | Al<sub>2</sub>O<sub>3</sub> | β1675.5 |- | [[Aluminium hydroxide]] | Solid | Al(OH)<sub>3</sub> | β1277 |- | [[Aluminium sulphate]] | Solid | Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> | β3440 |- | [[Barium chloride]] | Solid | BaCl<sub>2</sub> | β858.6 |- | [[Barium carbonate]] | Solid | BaCO<sub>3</sub> | β1216 |- | [[Barium hydroxide]] | Solid | Ba(OH)<sub>2</sub> | β944.7 |- | [[Barium oxide]] | Solid | BaO | β548.1 |- | [[Barium sulfate]] | Solid | BaSO<sub>4</sub> | β1473.3 |- | [[Beryllium]] | Solid | Be | 0 |- | [[Beryllium hydroxide]] | Solid | Be(OH)<sub>2</sub> | β903 |- | [[Beryllium oxide]] | Solid | BeO | β609.4 |- | [[Boron trichloride]] | Solid | BCl<sub>3</sub> | β402.96 |- | [[Bromine]] | Liquid | Br<sub>2</sub> | 0 |- | [[Bromide ion]] | Aqueous | Br<sup>β</sup> | β121 |- | [[Bromine]] | Gas | Br | 111.884 |- | [[Bromine]] | Gas | Br<sub>2</sub> | 30.91 |- | [[Bromine trifluoride]] | Gas | BrF<sub>3</sub> | β255.60 |- | [[Hydrogen bromide]] | Gas | HBr | β36.29 |- | [[Cadmium]] | Solid | Cd | 0 |- | [[Cadmium oxide]] | Solid | CdO | β258 |- | [[Cadmium hydroxide]] | Solid | Cd(OH)<sub>2</sub> | β561 |- | [[Cadmium sulfide]] | Solid | CdS | β162 |- | [[Cadmium sulfate]] | Solid | CdSO<sub>4</sub> | β935 |- | [[Caesium]] | Solid | Cs | 0 |- | [[Caesium]] | Gas | Cs | 76.50 |- | [[Caesium]] | Liquid | Cs | 2.09 |- | Caesium(I) ion | Gas | Cs<sup>+</sup> | 457.964 |- | [[Caesium chloride]] | Solid | CsCl | β443.04 |- | [[Calcium]] | Solid | Ca | 0 |- | [[Calcium]] | Gas | Ca | 178.2 |- | Calcium(II) ion | Gas | Ca<sup>2+</sup> | 1925.90 |- | Calcium(II) ion | Aqueous | Ca<sup>2+</sup> | β542.7 |- | [[Calcium carbide]] | Solid | CaC<sub>2</sub> | β59.8 |- | [[Calcium carbonate]] ([[Calcite]]) | Solid | CaCO<sub>3</sub> | β1206.9 |- | [[Calcium chloride]] | Solid | CaCl<sub>2</sub> | β795.8 |- | [[Calcium chloride]] | Aqueous | CaCl<sub>2</sub> | β877.3 |- | [[Calcium phosphate]] | Solid | Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> | β4132 |- | [[Calcium fluoride]] | Solid | CaF<sub>2</sub> | β1219.6 |- | [[Calcium hydride]] | Solid | CaH<sub>2</sub> | β186.2 |- | [[Calcium hydroxide]] | Solid | Ca(OH)<sub>2</sub> | β986.09 |- | [[Calcium hydroxide]] | Aqueous | Ca(OH)<sub>2</sub> | β1002.82 |- | [[Calcium oxide]] | Solid | CaO | β635.09 |- | [[Calcium sulfate]] | Solid | CaSO<sub>4</sub> | β1434.52 |- | [[Calcium sulfide]] | Solid | CaS | β482.4 |- | [[Wollastonite]] | Solid | CaSiO<sub>3</sub> | β1630 |- | [[Carbon]] ([[Graphite]]) | Solid | C | 0 |- | [[Carbon]] ([[Diamond]]) | Solid | C | 1.9 |- | [[Carbon]] | Gas | C | 716.67 |- | [[Carbon dioxide]] | Gas | CO<sub>2</sub> | β393.509 |- | [[Carbon disulfide]] | Liquid | CS<sub>2</sub> | 89.41 |- | [[Carbon disulfide]] | Gas | CS<sub>2</sub> | 116.7 |- | [[Carbon monoxide]] | Gas | CO | β110.525 |- | [[Carbonyl chloride]] ([[Phosgene]]) | Gas | COCl<sub>2</sub> | β218.8 |- | Carbon dioxide (unβionized) | Aqueous | CO<sub>2</sub>(aq) | β419.26 |- | [[Bicarbonate]] ion | Aqueous |HCO<sub>3</sub><sup>β</sup> | β689.93 |- | [[Carbonate]] ion | Aqueous |CO<sub>3</sub><sup>2β</sup> | β675.23 |- | Monatomic chlorine | Gas | Cl | 121.7 |- | [[Chloride]] ion | Aqueous | Cl<sup>β</sup> | β167.2 |- | [[Chlorine]] | Gas | Cl<sub>2</sub> | 0 |- | [[Chromium]] | Solid | Cr | 0 |- | [[Copper]] | Solid | Cu | 0 |- | [[Copper(II) bromide]] | Solid | CuBr2 | β138.490 |- | [[Copper(II) chloride]] | Solid | CuCl2 | β217.986 |- | [[Copper(II) oxide]] | Solid | CuO | β155.2 |- | [[Copper(II) sulfate]] || Aqueous || CuSO<sub>4</sub> || β769.98 |- | [[Fluorine]] | Gas | F<sub>2</sub> | 0 |- | Monatomic hydrogen | Gas | H | 218 |- | [[Hydrogen]] | Gas | H<sub>2</sub> | 0 |- | [[Water]] | Gas | H<sub>2</sub>O | β241.818 |- | [[Water]] | Liquid | H<sub>2</sub>O | β285.8 |- | [[Hydrogen ion]] | Aqueous | H<sup>+</sup> | 0 |- | [[Hydroxide ion]] | Aqueous | OH<sup>β</sup> | β230 |- | [[Hydrogen peroxide]] | Liquid | H<sub>2</sub>O<sub>2</sub> | β187.8 |- | [[Phosphoric acid]] | Liquid | H<sub>3</sub>PO<sub>4</sub> | β1288 |- | [[Hydrogen cyanide]] | Gas | HCN | 130.5 |- | [[Hydrogen bromide]] | Liquid | HBr | β36.3 |- | [[Hydrogen chloride]] | Gas | HCl | β92.30 |- | [[Hydrogen chloride]] | Aqueous | HCl | β167.2 |- | [[Hydrogen fluoride]] | Gas | HF | β273.3 |- | [[Hydrogen iodide]] | Gas | HI | 26.5 |- | [[Iodine]] | Solid | I<sub>2</sub> | 0 |- | [[Iodine]] | Gas | I<sub>2</sub> | 62.438 |- | [[Iodine]] | Aqueous | I<sub>2</sub> | 23 |- | [[Iodide]] ion | Aqueous | I<sup>β</sup> | β55 |- | [[Iron]] | Solid | Fe | 0 |- | Iron carbide ([[Cementite]]) | Solid | Fe<sub>3</sub>C | 5.4 |- | Iron(II) carbonate ([[Siderite]]) | Solid | FeCO<sub>3</sub> | β750.6 |- | [[Iron(III) chloride]] | Solid | FeCl<sub>3</sub> | β399.4 |- | [[Iron(II) oxide]] ([[WΓΌstite]]) | Solid | FeO | β272 |- | [[Iron(II,III) oxide]] ([[Magnetite]]) | Solid | Fe<sub>3</sub>O<sub>4</sub> | β1118.4 |- | [[Iron(III) oxide]] ([[Hematite]]) | Solid | Fe<sub>2</sub>O<sub>3</sub> | β824.2 |- | [[Iron(II) sulfate]] | Solid | FeSO<sub>4</sub> | β929 |- | [[Iron(III) sulfate]] | Solid | Fe<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> | β2583 |- | [[Iron(II) sulfide]] | Solid | FeS | β102 |- | [[Pyrite]] | Solid | FeS<sub>2</sub> | β178 |- | [[Lead]] | Solid | Pb | 0 |- | [[Lead dioxide]] | Solid | PbO<sub>2</sub> | β277 |- | [[Lead sulfide]] | Solid | PbS | β100 |- | [[Lead sulfate]] | Solid | PbSO<sub>4</sub> | β920 |- | [[Lead(II) nitrate]] | Solid | Pb(NO<sub>3</sub>)<sub>2</sub> | β452 |- | [[Lead(II) sulfate]] | Solid | PbSO<sub>4</sub> | β920 |- | [[Lithium fluoride]] | Solid | LiF | β616.93 |- | [[Magnesium]] | Solid | Mg | 0 |- | Magnesium ion | Aqueous | Mg<sup>2+</sup> | β466.85 |- | [[Magnesium carbonate]] | Solid | MgCO<sub>3</sub> | β1095.797 |- | [[Magnesium chloride]] | Solid | MgCl<sub>2</sub> | β641.8 |- | [[Magnesium hydroxide]] | Solid | Mg(OH)<sub>2</sub> | β924.54 |- | [[Magnesium hydroxide]] | Aqueous | Mg(OH)<sub>2</sub> | β926.8 |- | [[Magnesium oxide]] | Solid | MgO | β601.6 |- | [[Magnesium sulfate]] | Solid | MgSO<sub>4</sub> | β1278.2 |- | [[Manganese]] | Solid | Mn | 0 |- | [[Manganese(II) oxide]] | Solid | MnO | β384.9 |- | [[Manganese(IV) oxide]] | Solid | MnO<sub>2</sub> | β519.7 |- | [[Manganese(III) oxide]] | Solid | Mn<sub>2</sub>O<sub>3</sub> | β971 |- | [[Manganese(II,III) oxide]] | Solid | Mn<sub>3</sub>O<sub>4</sub> | β1387 |- | [[Permanganate]] | Aqueous | {{chem|MnO|4|β}} | β543 |- | [[Mercury(II) oxide]] (red) | Solid | HgO | β90.83 |- | [[Mercury sulfide]] (red, [[cinnabar]]) | Solid | HgS | β58.2 |- | [[Nitrogen]] | Gas | N<sub>2</sub> | 0 |- | [[Ammonia]] (ammonium hydroxide) || Aqueous || NH<sub>3</sub> (NH<sub>4</sub>OH) || β80.8 |- | Ammonia || Gas || NH<sub>3</sub> || β46.1 |- | [[Ammonium nitrate]] || Solid || NH<sub>4</sub>NO<sub>3</sub> || β365.6 |- | [[Ammonium chloride]] | Solid | NH<sub>4</sub>Cl | β314.55 |- | [[Nitrogen dioxide]] | Gas | NO<sub>2</sub> | 33.2 |- | [[Hydrazine]] | Gas | N<sub>2</sub>H<sub>4</sub> | 95.4 |- | [[Hydrazine]] | Liquid | N<sub>2</sub>H<sub>4</sub> | 50.6 |- | [[Nitrous oxide]] | Gas | N<sub>2</sub>O | 82.05 |- | [[Nitric oxide]] | Gas | NO | 90.29 |- | [[Dinitrogen tetroxide]] | Gas | N<sub>2</sub>O<sub>4</sub> | 9.16 |- | [[Dinitrogen pentoxide]] | Solid | N<sub>2</sub>O<sub>5</sub> | β43.1 |- | [[Dinitrogen pentoxide]] | Gas | N<sub>2</sub>O<sub>5</sub> | 11.3 |- |[[Nitric acid]] |Aqueous |HNO<sub>3</sub> |β207 |- |Monatomic oxygen |Gas |O |249 |- |[[Oxygen]] |Gas |O<sub>2</sub> |0 |- |[[Ozone]] |Gas |O<sub>3</sub> |143 |- | [[White phosphorus]] | Solid | P<sub>4</sub> | 0 |- | [[Red phosphorus]] | Solid | P | β17.4<ref name=HS>{{Housecroft2nd|page=392}}</ref> |- | [[Black phosphorus]] | Solid | P | β39.3<ref name=HS/> |- | [[Phosphorus trichloride]] | Liquid | PCl<sub>3</sub> | β319.7 |- | [[Phosphorus trichloride]] | Gas | PCl<sub>3</sub> | β278 |- | [[Phosphorus pentachloride]] | Solid | PCl<sub>5</sub> | β440 |- | [[Phosphorus pentachloride]] | Gas | PCl<sub>5</sub> | β321 |- | [[Phosphorus pentoxide]] | Solid | P<sub>2</sub>O<sub>5</sub> | β1505.5<ref>{{cite book |editor1-last=Green |editor1-first=D.W. |title=Perry's Chemical Engineers' Handbook |date=2007 |publisher=Mcgraw-Hill |isbn=9780071422949 |pages=2β191 |edition=8th |ref=P2O5}}</ref> |- | [[Potassium bromide]] | Solid | KBr | β392.2 |- | [[Potassium carbonate]] | Solid | K<sub>2</sub>CO<sub>3</sub> | β1150 |- | [[Potassium chlorate]] | Solid | KClO<sub>3</sub> | β391.4 |- | [[Potassium chloride]] | Solid | KCl | β436.68 |- | [[Potassium fluoride]] | Solid | KF | β562.6 |- | [[Potassium oxide]] | Solid | K<sub>2</sub>O | β363 |- | [[Potassium nitrate]] | Solid | KNO<sub>3</sub> | β494.5 |- | [[Potassium perchlorate]] | Solid | KClO<sub>4</sub> | β430.12 |- | [[Silicon]] | Gas | Si | 368.2 |- | [[Silicon carbide]] | Solid | SiC | β74.4,<ref>{{cite journal |last1=Kleykamp |first1=H. |title=Gibbs Energy of Formation of SiC: A contribution to the Thermodynamic Stability of the Modifications |journal=Berichte der Bunsengesellschaft fΓΌr physikalische Chemie |date=1998 |volume=102 |issue=9 |pages=1231β1234 |ref=SiC_a|doi=10.1002/bbpc.19981020928 }}</ref> β71.5<ref>{{cite web| url=https://janaf.nist.gov/tables/C-100.html |title= Silicon Carbide, Alpha (SiC) |author=<!--Not stated--> |date=March 1967 |access-date=5 February 2019|ref=SiC_b}}</ref> |- | [[Silicon tetrachloride]] | Liquid | SiCl<sub>4</sub> | β640.1 |- | [[Silica]] ([[Quartz]]) | Solid | SiO<sub>2</sub> | β910.86 |- | [[Silver bromide]] | Solid | AgBr | β99.5 |- | [[Silver chloride]] | Solid | AgCl | β127.01 |- | [[Silver iodide]] | Solid | AgI | β62.4 |- | [[Silver oxide]] | Solid | Ag<sub>2</sub>O | β31.1 |- | [[Silver sulfide]] | Solid | Ag<sub>2</sub>S | β31.8 |- | [[Sodium]] || Solid || Na || 0 |- | Sodium || Gas || Na || 107.5 |- | [[Sodium bicarbonate]] || Solid || NaHCO<sub>3</sub> || β950.8 |- | [[Sodium carbonate]] | Solid | Na<sub>2</sub>CO<sub>3</sub> | β1130.77 |- | [[Sodium chloride]] | Aqueous | NaCl | β407.27 |- | [[Sodium chloride]] | Solid | NaCl | β411.12 |- | [[Sodium chloride]] | Liquid | NaCl | β385.92 |- | [[Sodium chloride]] | Gas | NaCl | β181.42 |- |[[Sodium chlorate]] |Solid |NaClO<sub>3</sub> | β365.4 |- | [[Sodium fluoride]] | Solid | NaF | β569.0 |- | [[Sodium hydroxide]] | Aqueous | NaOH | β469.15 |- | [[Sodium hydroxide]] | Solid | NaOH | β425.93 |- |[[Sodium hypochlorite]] |Solid |NaOCl |β347.1 |- | [[Sodium nitrate]] | Aqueous | NaNO<sub>3</sub> | β446.2 |- | [[Sodium nitrate]] | Solid | NaNO<sub>3</sub> | β424.8 |- | [[Sodium oxide]] | Solid | Na<sub>2</sub>O | β414.2 |- | Sulfur (monoclinic) || Solid || S<sub>8</sub> || 0.3 |- | Sulfur (rhombic) || Solid || S<sub>8</sub> || 0 |- | [[Hydrogen sulfide]] | Gas | H<sub>2</sub>S | β20.63 |- | [[Sulfur dioxide]] | Gas | SO<sub>2</sub> | β296.84 |- | [[Sulfur trioxide]] | Gas | SO<sub>3</sub> | β395.7 |- | [[Sulfuric acid]] | Liquid | H<sub>2</sub>SO<sub>4</sub> | β814 |- | [[Titanium]] | Gas | Ti | 468 |- | [[Titanium tetrachloride]] | Gas | TiCl<sub>4</sub> | β763.2 |- | [[Titanium tetrachloride]] | Liquid | TiCl<sub>4</sub> | β804.2 |- | [[Titanium dioxide]] | Solid | TiO<sub>2</sub> | β944.7 |- | [[Zinc]] | Gas | Zn | 130.7 |- | [[Zinc chloride]] | Solid | ZnCl<sub>2</sub> | β415.1 |- | [[Zinc oxide]] | Solid | ZnO | β348.0 |- | [[Zinc sulfate]]|| Solid || ZnSO<sub>4</sub> || β980.14 |}
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