Fig 3E.1 - Compression Factor of a Van der Waals Gas
Van der Waals Parameters
| Gas | a/(bar·L2·mol-2) | b/(L·mol-1) |
|---|---|---|
| ammonia | 4.225 | 0.0371 |
| argon | 1.355 | 0.0320 |
| chlorine | 6.343 | 0.0542 |
| methane | 2.303 | 0.0431 |
| ethane | 5.507 | 0.0651 |
| hydrogen | 0.2452 | 0.0265 |
| oxygen | 1.382 | 0.0319 |
| water | 5.537 | 0.0305 |
| ideal gas | 0 | 0 |
To graph the compression factor for a gas enter a, b, T and click New Plot. Values for a and b from the table above can be input by clicking the name of the gas. Up to 5 plots can be displayed at one time. The Clear button will remove all plots. To see the parameters for each plot click the Legend button. The Redraw button will refresh the graph. This is useful when the function domain (i.e., P ) has been changed. To see a value on the graph, move your cursor to the desired location then click.