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Boiling Point Calculator

Chemistry
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Calculates the boiling point of a substance at a given pressure using the Clausius-Clapeyron equation.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Pressure, Normal Boiling Point, and Enthalpy of Vaporization in the units shown.

Step 2

Read Boiling Point in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

Water

Pressure: 101.325 kPa; Normal Boiling Point: 100 °C; Enthalpy of Vaporization: 40.65 kJ/mol

Boiling Point: 100 °C

Ethanol

Pressure: 101.325 kPa; Normal Boiling Point: 78.37 °C; Enthalpy of Vaporization: 38.56 kJ/mol

Boiling Point: 78.37 °C

Ammonia

Pressure: 101.325 kPa; Normal Boiling Point: -33.35 °C; Enthalpy of Vaporization: 23.35 kJ/mol

Boiling Point: -33.35 °C

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