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I have a question regarding the saturated vapor pressure of water

2017-03-27View Original

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1. Is the saturated water vapor pressure in the air related to air pressure in addition to temperature? For example, at 1 atm and 70°C, the saturated vapor pressure is 31.14 kPa; so what is the saturated vapor pressure at 1.8 atm and 70°C? Is there a calculation formula? 2. Is the saturated water vapor pressure related to the medium? For example, can the saturated water vapor pressure in air and that in hydrogen be found in the same saturated vapor pressure table? Please give me some guidance, teacher!
Reply #22017-03-27
The saturated vapor pressure refers to the pressure-temperature curve of a pure component. For the saturated vapor pressure of water in hydrogen, it depends on the partial pressure of water, that is, the water content (usually on a ppm scale), which can be found in the same table. In chemical plants, it is generally also expressed in terms of dew point.

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