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c1700
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standard-molar-enthalpies-of-formation-for-some-substances
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Enthalpy and Enthalpy Change
Grades
Secondary V
Topic
Chemistry
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Contenu
Corps

The table below lists the standard molar enthalpy of formation (|\Delta H^\circ_f|) of various substances, measured under standard conditions at SATP (standard ambient temperature and pressure), i.e. at 25°C and 101.3 kPa.

Chemical name Formula |\Delta H^\circ_f|
(kJ/mol)		 Chemical name Formula |\Delta H^\circ_f|
(kJ/mol)
Acetone |(CH_{3})CO_{(l)}| -248.1 Sodium hydroxide |NaOH_{(s)}| -425.6
Acetic acid |CH_{3}COOH_{(l)}| -432.8 Silver iodide |AgI_{(s)}| -61.8
Formic acid |HCOOH_{(l)}| -425.1 Sodium iodide |NaI_{(s)}| -287.8
Nitric acid |HNO_{3(l)}| -174.1 Hydrogen iodide |HI_{(g)}| +26.5
Sulphuric acid |H_{2}SO_{4(l)}| -814.0 Formaldehyde |CH_{2}O_{(g)}| -108.6
Ammonia |NH_{3(g)}| -45.9 Methane |CH_{4(g)}| -74.4
Benzene |C_{6}H_{6(l)}| +49.0 Methanol |CH_{3}OH_{(l)}| -239.1
Silver bromide |AgBr_{(s)}| -100.4 Methylpropane |C_{4}H_{10(g)}| -134.2
Hydrogen bromide |HBr_{(g)}| -36.3 Nitrogen monoxide |NO_{(g)}| +90.2
Sodium bromide |NaBr_{(s)}| -361.1 Carbon monoxide |CO_{(g)}| -110.5
Butane |C_{4}H_{10(g)}| -125.6 Ammonium nitrate |NH_{4}NO_{3(s)}| -365.6
Barium carbonate |BaCO_{3(s)}| -1216.3 Nitromethane |CH_{3}NO_{2(l)}| -113.1
Calcium carbonate |CaCO_{3(s)}| -1206.9 Octane |C_{8}H_{18(l)}| -250.1
Magnesium carbonate |MgCO_{3(s)}| -1095.8 Tin(II) oxide |SnO_{(s)}| -280.7
Potassium chlorate |KClO_{3(s)}| -397.7 Barium oxide |BaO_{(s)}| -553.5
Chloroethene |C_{2}H_{2}Cl_{(g)}| +37.3 Calcium oxide |CaO_{(s)}| -634.9
Ammonium chloride |NH_{4}Cl_{(s)}| -314.4 Copper(II) oxide |CuO_{(s)}| -157.3
Silver chloride |AgCl_{(s)}| -127.0 Copper(I) oxide |Cu_{2}O_{(s)}| -168.6
Hydrogen chloride |HCl_{(g)}| -92.3 Magnesium oxide |MgO_{(s)}| -601.6
Potassium chloride |KCl_{(s)}| -436.7 Manganese(II) oxide |MnO_{(s)}| -385.2
Sodium chloride |NaCl_{(s)}| -411.2 Mercury(II) oxide |HgO_{(s)}| -90.8
Bromine |Br_{2(g)}| +30.9 Nickel(II) oxide |NiO_{(s)}| -239.7
1,2-Dichloroethane |C_{2}H_{4}Cl_{2(l)}| -126.9 Lead(II) oxide |PbO_{(s)}| -219.0
Magnesium chloride |MgCl_{2(s)}| -641.3 Zinc oxide |ZnO_{(s)}| -350.5
Barium hydroxide |Ba(OH)_{2(s)}| -944.7 Ozone |O_{3(g)}| +142.7
Calcium hydroxide |Ca(OH)_{2(s)}| -986.1 Phosphorus pentachloride |PCl_{5(g)}| -443.5
Magnesium hydroxide |Mg(OH)_{2(s)}| -924.5 Pentane |C_{5}H_{12(l)}| -173.5
Iodine |I_{2(g)}| +62.4 Hydrogen peroxide |H_{2}O_{2(l)}| -187.8
Nitrogen dioxide |NO_{2(g)}| +33.2 Phenylethene |C_{6}H_{5}CHCH_{2(l)}| +103.8
Carbon dioxide |CO_{2(g)}| -393.5 Propane |C_{3}H_{8(g)}| -104.7
Tin(IV) oxide |SnO_{2(s)}| -577.6 Sucrose |C_{12}H_{22}O_{11(s)}| -2225.5
Manganese(IV) oxide |MnO_{2(s)}| -520.0 Barium sulphate |BaSO_{4(s)}| -1473.2
Lead(IV) oxide |PbO_{2(s)}| -277.4 Copper(II) sulphide |CuS_{(s)}| -53.1
Silicon dioxide |SiO_{2(s)}| -910.7 Copper(I) sulphide |Cu_{2}S_{(s)}| -79.5
Sulphur dioxide |SO_{2(g)}| -296.8 Hydrogen sulphide |H_{2}S_{(g)}| -20.6
Carbon disulphide |CS_{2(l)}| +89.0 Mercury(II) sulphide |HgS_{(s)}| -58.2
Water (liquid) |H_{2}O_{(l)}| -285.8 Zinc sulphide |ZnS_{(s)}| -206.0
Water (vapour) |H_{2}O_{(g)}| -241.8 Iron(II, III) oxide |Fe_{3}O_{4(s)}| -1118.4
Ethane |C_{2}H_{6(g)}| -83.8 Phosphorus trichloride (liquid) |PCl_{3(l)}| -319.7
1,2-Ethanediol |C_{2}H_{4}(OH)_{2(l)}| -454.8 Phosphorus trichloride (vapour) |PCl_{3(g)}| -287.0
Ethanol |C_{2}H_{5}OH_{(l)}| -235.2 2,2,4-trimethylpentane |C_{8}H_{18(l)}| -259.2
Ethylene |C_{2}H_{4(g)}| +52.5 Aluminium oxide |Al_{2}O_{3(s)}| -1675.7
Acetylene |C_{2}H_{2(g)}| +226.8 Chromium(III) oxide |Cr_{2}O_{3(s)}| -1139.7
Hydrogen fluoride |HF_{(g)}| -273.3 Iron(III) oxide |Fe_{2}O_{3(s)}| -824.2
Glucose |C_{6}H_{12}O_{6(s)}| -1273.1 Sulphur trioxide (liquid) |SO_{3(l)}| -441.0
Hexane |C_{6}H_{14(l)}| -198.7 Sulphur trioxide (vapour) |SO_{3(g)}| -395.7
Potassium hydroxide |KOH_{(s)}| -424.8 Urea |CO(NH_{2})_{2(s)}| -333.5
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