Vapor Pressure Calculator – Financial Calculators on Line

CHEMISTRY CALCULATORS Vapor Pressure Calculator Effortlessly calculate vapor pressure using our advanced calculator.

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What is the Vapor Pressure Calculator & How does it work?

Vapor pressure is the pressure exerted by a vapor in equilibrium with its liquid or solid phase. It depends on the temperature and the nature of the substance. The Clausius-Clapeyron equation relates the change in vapor pressure to changes in temperature:

\ln \left(\frac{P_2}{P_1}\right) = -\frac{\Delta H_{vap}}{R} \left(\frac{1}{T_2} – \frac{1}{T_1}\right)

P = vapor pressure, T = temperature in Kelvin, ΔH_vap = enthalpy of vaporization, R = gas constant (8.314 J/(mol·K))

This equation is useful for predicting how the vapor pressure of a substance changes with temperature.

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Parameters

Enthalpy of Vaporization (ΔH_vap) in J/mol

Initial Temperature (T₁) in K

Final Temperature (T₂) in K

Initial Pressure (P₁) in atm

Final Pressure (P₂) in atm—

Results are for informational purposes only and do not constitute professional advice.