Clausius-Clapeyron Equation

Written by Jerry Ratzlaff. Posted in Thermodynamics

Clausius-Clapeyron equation is the vapor pressure of given liquids or solids.

Abbreviated as \(p_s\)

formula

\(In \left(  \frac {p_2}{p_1} \right)  =  \frac {\Delta H}{R}   \left(  \frac {1}{T_1}  \;-\;   \frac {1}{T_2}   \right)        \) 

Where:

\(p_1\) = vapor pressure at the temperature

\(p_2\) = vapor pressure at the temperature

\(\Delta H\) = enthalpy of vaporization of the liquid

\(R\) = real gas content

\(T_1\) = temperature at which the vapor pressure is known

\(T_2\) = temperature at which the vapor pressure is to be found