substance | Î Hf ° (kJ/mol) | Î Gf ° (kJ/mol) | S ° (J/molâK) | Aluminum | Al3+ (aq) | --- | -485.0 | --- | Al (s) | 0 | 0 | 28.3 | Al2O3 (s) | -1675.7 | -1582.3 | 50.9 | Al(OH)3 (s) | --- | -1147.25 | --- | Bromine | Brâ (aq) | --- | -104.0 | --- | Br2 (l) | 0 | 0 | 152.2 | Br2 (g) | 30.9 | 3.1 | 245.5 | HBr (g) | -36.3 | -53.4 | 198.7 | Calcium | Ca2+ (aq) | --- | -553.6 | --- | CaCl2 (s) | -795.4 | --- | --- | CaO (s) | -634.9 | --- | --- | Ca(OH)2 (s) | -985.2 | --- | --- | Ca3(PO4)2 (s) | --- | -3884.7 | --- | Carbon | C (s) | 0 | 0 | 5.7 | CCl4 (g) | -95.7 | -64.0 | 309.4 | CCl4 (l) | -128.2 | -68.6 | 214.4 | CCl4 (s) | -136.8 | --- | --- | CH4 (g) | -74.6 | -50.5 | 186.3 | C2H2 (g) | 227.4 | --- | --- | C2H6 (g) | -84.0 | --- | --- | C3H8 (g) | -103.85 | -23.4 | 270.3 | C4H10 (g) | -125.7 | -15.7 | 310.0 | C4H10 (l) | -147.3 | -15.0 | 231.0 | C6H6 (l) | 49.1 | 124.5 | 173.4 | C6H6 (g) | 82.9 | 129.7 | 269.2 | CH3OH (l) | -239.2 | -166.6 | 126.80 | CH3OH (g) | -201.0 | -162.3 | 239.9 | (CH3)2(CH2)2O (l) | -279.5 | -346.74 | 253.5 | C6H12O6 (s) | -1237.3 | -910.4 | 212.1 | CO (g) | -110.5 | -137.2 | 197.7 | CO2 (g) | -393.5 | -394.4 | 213.8 | C2H5OH (l) | -277.6 | -174.8 | 160.7 | C2H5OH (g) | -234.8 | -167.9 | 281.6 | HCH3CO2 (l) | -484.3 | -389.9 | 159.8 | HCH3CO2 (s) | -472.8 | --- | --- | HCH3CO2 (g) | -432.2 | --- | 283.5 | HCN (l) | 108.9 | 125.0 | 112.8 | HCN (g) | 135.1 | 124.7 | 201.8 | CS2 (s) | 93.8 | --- | --- | CS2 (l) | 89.0 | 64.6 | 151.3 | CS2 (g) | 116.7 | 67.1 | 237.8 | Chlorine | Cl2 (g) | 0 | 0 | 223.1 | Clâ (aq) | --- | -131.2 | --- | HCl (aq) | -167. | --- | --- | HCl (g) | -92.3 | -95.3 | 186.9 | Chromium | CrO42â (aq) | --- | -727.8 | --- | Fluorine | F2 (g) | 0 | 0 | 202.8 | HF (g) | -273.3 | -275.4 | 173.8 | Hydrogen | H2 (g) | 0 | 0 | 130.7 | Iron | Fe (s) | 0 | 0 | 27.3 | FeCl3 (s) | -399.5 | -334.0 | 142.3 | Fe2O3 (s) | -824.2 | -742.2 | 87.4 | Lead | Pb2+ (aq) | --- | -24.4 | --- | PbBr2 (s) | -278.7 | -261.9 | 161.5 | PbS (s) | -100.4 | -98.7 | 91.2 | PbSO4 (s) | -920.0 | -813.0 | 148.5 | Magnesium | MgCl2 (s) | -641.3 | -591.8 | 89.6 | MgO (s) | -601.6 | -569.3 | 27.0 | Mercury | Hg (g) | 61.4 | 31.8 | 175.0 | Hg (l) | 0 | 0 | 75.9 | Hg (s) | -2.29 | --- | --- | Hg22+ (aq) | --- | 153.5 | --- | Hg2Cl2 (s) | --- | -210.7 | --- | Nitrogen | N2 (g) | 0 | 0 | 191.6 | N2H4 (g) | 95.4 | 159.4 | 238.5 | N2H4 (l) | 50.6 | 149.3 | 121.2 | NH3 (g) | -45.9 | -16.4 | 192.8 | NH3 (l) | -69.54 | -26.50 | 95.09 | NH4NO3 (s) | -365.6 | -183.9 | 151.1 | NO (g) | 91.3 | 87.6 | 210.8 | NO2 (g) | 33.2 | 51.3 | 240.1 | NOCl (g) | 51.7 | 66.1 | 261.7 | N2O4 (g) | 11.1 | 99.8 | 304.4 | HNO2 (g) | -79.5 | --- | --- | HNO3 (l) | -174.1 | -80.7 | 155.6 | HNO3 (g) | -133.9 | -73.5 | 266.9 | Oxygen | OHâ (aq) | --- | -157.2 | --- | H2O (l) | -285.8 | -237.1 | 70.0 | H2O (g) | -241.8 | -228.6 | 188.8 | O2 (g) | 0 | 0 | 205.2 | H2O2 (l) | -187.8 | -120.4 | 109.6 | H2O2 (g) | -136.3 | -105.6 | 232.7 | Phosphorus | P4 (s) | 0 | 0 | 41. | P4 (g) | 58.9 | 24.4 | 280.0 | PCl3 (g) | -287.0 | -267.8 | 311.8 | PCl3 (l) | -319.7 | -272.3 | 217.1 | PF5 (g) | -1594.4 | -1520.7 | 300.8 | PO43â (aq) | --- | -1018.7 | --- | H3PO4 (l) | -1271.7 | --- | --- | H3PO4 (s) | -1284.4 | -1124.3 | 110.5 | P4O10 (s) | -2984. | -2675.2 | 228.9 | Potassium | KBr (s) | -393.4 | -380.7 | 95.9 | KNO3 (s) | -492.7 | -393.13 | 132.9 | Silver | Ag+ (aq) | --- | 77.1 | --- | Ag2CrO4 (s) | --- | -641.8 | --- | Sodium | NaCl (s) | -411.2 | --- | --- | NaOH (s) | -425.8 | --- | --- | Sulfur | S8 (s) | 0 | 0 | 32.0 | H2S (g) | -20.6 | --- | --- | H2SO4 (l) | -814.0 | --- | --- | SF6 (g) | -1220.5 | -1116.5 | 291.5 | Tin | Sn (s) | 0 | 0 | 51.2 | SnO2 (s) | -577.6 | -515.8 | 49.0 | Titanium | TiCl4 (g) | -763.2 | -726.3 | 353.2 | TiCl4 (l) | -804.2 | -737.2 | 252.3 | TiO2 (s) | -944.0 | -888.8 | 50.6 | |