HCBBS Forum (English)
Submit Chemical Projects / Find Solutions
Amplify Your Requirements on a Broader Chemical Platform *Engineering · Technology · Equipment · Solutions*
Submit Request

How is the saturated vapor pressure calculated in the property tables for pure substances?

2018-01-08View Original

Thread Content

The table “900 Tables of Physical Properties of Pure Substances ChemPPDB_CC_Hgbbs” downloaded from the Internet allows for the calculation of saturated vapor pressure at different temperatures; however, when different pressures are entered, the saturated vapor pressure remains unchanged. Is there something wrong with this table?
Reply #22018-01-08
I am in a hurry to calculate the saturated vapor pressure of substances at the same temperature but different pressures. Could you advise me on any other software or tables that I can use?
Reply #32018-01-08
The saturated vapor pressure is dependent on temperature. What happens when the parameter \"pressure\" is entered? If a closed system contains not only component A which is under study but also component B, then the pressure of B has no effect on the partial pressure of A; the pressure in its equilibrium state will be equal to its saturated vapor pressure. With one exception: if the concentration of A in the liquid phase is not 100%, then its partial pressure is equal to its saturated vapor pressure multiplied by the percentage of the liquid phase
Reply #42018-01-09
May I ask, in a closed container, is the saturated vapor pressure independent of pressure?
Reply #52018-01-09
In a closed container, does the saturated vapor pressure of a single component remain unchanged under pressures of 1 kilogram and 10 kilograms?
Reply #62018-01-10
According to Antonie’s equation, the saturated vapor pressure of a pure substance is a function of temperature; the saturated vapor pressures at different pressures and for different substances are not the same thing
Reply #72018-01-10
It has nothing to do with pressure; it depends only on temperature and the composition of the liquid phase. The amount of N2 in a sealed container is independent of other volatile components

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.