Gas laws model

This model is based on the kinetic theory and can be used to explore the relationships between pressure, volume and temperature for a gas. In the model below, the inital conditions are set to a temperature of O°C (273 K), a volume of 22.4 dm3 and 1.0 mol of the gas argon, Ar. To work with the model:

choose new values of temperature and volume from the drop down menus press the update button to refresh the display press initialise to restore the starting values of temperature = 273 K and volume = 22.4 dm3 press clear to clear the display

The applet is based on the kinetic theory. Note that:

the gas consists of particles (atoms or molecules) in continuous random motion the gas particles are point-like: they are infinitely small the gas particles move in a straight line unless they have a collision any attractive or repulsive forces between the particles are ignored unless the particles collide

These are the basic postulates of the kinetic theory.

You can use the applet to:

• explore the relationship between the pressure and the volume of fixed mass of gas at a constant temperature (Boyle's law)

• explore the relationship between the pressure and the temperature of a fixed mass of gass at a constant volume (Pressure law)

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