Heat of vaporization

From Wikinfo

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The heat of vaporization is the heat required to vaporize one mass unit (one gram) of a substance at its normal boiling point. The vaporization heat of water is 600 Calories per gram. Heat of vaporization is equal and opposite to its heat of condensation, any particular substance has a specific heat of condensation.

Heats of vaporization of the elements

Element Heat of vaporization (kJ/mol) Actinium n/a Aluminium 293.4 Antimony 77.14 Argon 6.447 Arsenic 34.76 Astatine 114 Barium 142 Beryllium 292.40 Bismuth 104.8 Boron 489.7 Bromine 15.438 Cadmium 100 Caesium 67.74 Calcium 153.6 Carbon 355.8 Cerium 414 Chlorine 10.2 Chromium 344.3 Cobalt 376.5 Copper 300.3 Fluorine 3.2698 Gallium 258.7 Germanium 330.9 Gold 334.4 Hafnium 575 Helium 0.0845

Element Heat of vaporization (kJ/mol) Hydrogen 0.44936 Indium 231.5 Iodine 20.752 Iridium 604 Iron 349.6 Krypton 9.029 Lanthanum 414 Lead 177.7 Lithium 145.92 Magnesium 127.4 Manganese 226 Mercury 59.229 Molybdenum 598 Neon 1.7326 Neptunium n/a Nickel 370.4 Niobium 696.6 Nitrogen 2.7928 Osmium 627.6 Oxygen 3.4099 Palladium 357 Phosphorus 12.129 Platinum 510 Polonium 60.1 Potassium 79.87 Radium 37

Element Heat of vaporization (kJ/mol) Radon 16.4 Rhenium 715 Rhodium 493 Rubidium 72.216 Ruthenium 595 Scandium 314.2 Selenium 26.3 Silicon 384.22 Silver 250.58 Sodium 96.96 Strontium 144 Sulfur 1.7175 Tantalum 743 Technetium 660 Tellurium 52.55 Thallium 164.1 Thorium 514.4 Tin 295.8 Titanium 421 Tungsten 824 Vanadium 452 Xenon 12.636 Yttrium 363 Zinc 115.3 Zirconium 58.2

References

• Adapted from the Wikipedia article, "Heat of vaporization" http://en.wikipedia.org/wiki/Heat_of_vaporization December 15, 2003