Kirchhoff vapor pressure formula

Kirchhoff vapor pressure formula

[¦kirch‚hōf ′vā·pər ‚pre·shər ‚fȯr·myə·lə]
(thermodynamics)
An approximate formula for the variation of vapor pressure p with temperature T, valid over a limited temperature range; it is In p = A-B/T-C In T, where A, B, and C are constants.