Enter the mole fraction of the solvent and the vapor pressure of the solvent (Pa) into the calculator to determine the Saturation Pressure.
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Saturation Pressure Formula
The following formula is used to calculate the Saturation Pressure.
Psat = Xsolv * Psolv
- Where Psat is the Saturation Pressure (Pa)
- Xsolv is the mole fraction of the solvent
- Psolv is the vapor pressure of the solvent (Pa)
How to Calculate Saturation Pressure?
The following two example problems outline how to calculate the Saturation Pressure.
Example Problem #1:
- First, determine the mole fraction of the solvent. In this example, the mole fraction of the solvent is given as .87.
- Next, determine the vapor pressure of the solvent (Pa). For this problem, the vapor pressure of the solvent (Pa) is given as 100.
- Finally, calculate the Saturation Pressure using the equation above:
Psat = Xsolv * Psolv
Inserting the values from above and solving the equation:
Psat = .87 * 100 = 87 (Pa)
Example Problem #2:
Using the same process as above, first define the variables required by the formula. In this case, these values are:
mole fraction of the solvent = .75
vapor pressure of the solvent (Pa) = 200
Entering these values yields:
Psat = .75 * 200 = 150(Pa)
