What happens when you you throw a fire extinguisher in a fire?

According to the ideal gas law, pressure x volume = number of moles x the constant R (8.31 in metric) x temperature. Although a fire extinguisher does not contain an ideal gas, it behaves in a similar way. Since the volume is constant being contained in the fire extinguisher, you may see that the pressure is directly proportional to the temperature. Because of this, as the temperature rises from the fire so does the pressure inside the fire extinguisher until it eventually explodes.