Principle

The high-pressure steam apparatus makes it possible to measure
steam pressure in a temperature range of 100-250 °C. This allows
for investigations to be performed on real gases and vapours.
Typical equilibrium states between gas and liquid phases can be set
up. For this purpose, water is heated in a closed pressure chamber
at constant volume. The heat of vaporisation is determined at
various temperatures from the measurement of vapour pressure as a
function of temperature.

Benefits


No open flame in the setup - Reduction of thermal hazard

No gas burner required - Easy to operate and no consumption of consumables

Kompakter, leicht transportierbarer Versuchsaufbau



Tasks


Measure the vapour pressure of water as a function of
temperature.

Calculate the heat of vaporisation at various temperatures from
the values measured.

Determine boiling point at normal pressure by
extrapolation.


What you can learn about


Boiling point

Heat of vaporisation

Clausius-Clapeyron equation

Van’t Hoff law

Carnot cycle