P400
The vapor pressures of various compounds are measured using a device which contains a large chamber into which the solid or liquid is placed. The device is sealed and a pressure gauge measures the pressure as equilibrium is reached in the chamber.
![](https://member.mytestingsolution.com/wp-content/uploads/2019/03//cp-1-1.png)
Figure 1. Vapor pressure apparatus.
Various samples are placed inside the device and measured and the following results are obtained:
Table 1. Vapor pressure of various molecules at 20 °C.
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