Enthalpy of sublimation

The enthalpy of sublimation, or heat of sublimation, is the heat required to change one mole of a substance from solid state to gaseous state at a given combination of temperature and pressure, usually standard temperature and pressure (STP). It is equal to the cohesive energy of the solid. For elemental metals, it is also equal to the standard enthalpy of formation of the gaseous metal atoms.[1] The heat of sublimation is usually expressed in kJ/mol, although the less customary kJ/kg is also encountered.

Sublimation enthalpies
symbol substances Sublimation enthalpy (kJ/mol)
Na sodium 108
K potassium 89
Rb rubidium 82
Cs caesium 76[1]
Mg magnesium 148[1]
Ca calcium 178[1]
Sr strontium 164[1]
Ba barium 180[1]
I2 iodine 62.4[2]
C10H8 naphthalene 72.9[2]
CO2 carbon dioxide 25[2]

See also

References
  1. Oxtoby, D. W; Gillis, H.P., Butler, L. J. (2015).Principles of Modern Chemistry, Brooks Cole. Appendix D. ISBN 978-1305079113
  2. Chickos, James S.; Acree, William E. (2002). "Enthalpies of Sublimation of Organic and Organometallic Compounds. 1910–2001". Journal of Physical and Chemical Reference Data. 31 (2): 537–698. doi:10.1063/1.1475333. ISSN 0047-2689.
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