|
|
|
|
|
|
0.0 |
5.2 |
6.9 |
2.1 |
|
32.0 |
5.6 |
7.4 |
2.3 |
|
77.0 |
6.1 |
8.1 |
2.5 |
|
100.0 |
6.4 |
8.4 |
2.6 |
|
212.0 |
7.7 |
10.1 |
3.1 |
For each of three different experments air is compressed into a flask. The temperature and the pressure of the air in the flask is measured at a variety of temperatures. The (ficticious) data is tabluated and graphed above.
The graph clearly shows that temperature and pressure are directly related to each other. That is, at constant volume, the pressure of the gas is proportional to the temperature of the gas.
What is also apparent is that all the trendlines intesect the temperature axis at -459.67 °F. This temperature is absolute zero, O K (Kelvin) or -273.15 °C. It is absolute because to go any lower would require that a gas exert negative pressure.