The formula to calculate Vapour Pressure of Solution (Ps) is:
\[ Ps = χs \cdot P′s \]
Where:
Vapour Pressure of Solution is the pressure of the vapor which is formed after a solid gets dissolved into the liquid.
Mole Fraction of Solvent in Solution is the concentration of solvent in the solution.
Vapour Pressure of Solvent is the pressure of the vapor which is formed before a solid gets dissolved into the liquid.
Let's assume the following values:
Using the formula:
\[ Ps = χs \cdot P′s \]
Evaluating:
\[ Ps = 0.9 \cdot 28300 \]
The Vapour Pressure of Solution is 25470 Pascal.
| Mole Fraction of Solvent in Solution | Vapour Pressure of Solvent (Pascal) | Vapour Pressure of Solution (Pascal) |
|---|---|---|
| 0.8 | 27000 | 21,600.00 |
| 0.8 | 27500 | 22,000.00 |
| 0.8 | 28000 | 22,400.00 |
| 0.8 | 28500 | 22,800.00 |
| 0.8 | 29000 | 23,200.00 |
| 0.85 | 27000 | 22,950.00 |
| 0.85 | 27500 | 23,375.00 |
| 0.85 | 28000 | 23,800.00 |
| 0.85 | 28500 | 24,225.00 |
| 0.85 | 29000 | 24,650.00 |
| 0.9 | 27000 | 24,300.00 |
| 0.9 | 27500 | 24,750.00 |
| 0.9 | 28000 | 25,200.00 |
| 0.9 | 28500 | 25,650.00 |
| 0.9 | 29000 | 26,100.00 |
| 0.95 | 27000 | 25,650.00 |
| 0.95 | 27500 | 26,125.00 |
| 0.95 | 28000 | 26,600.00 |
| 0.95 | 28500 | 27,075.00 |
| 0.95 | 29000 | 27,550.00 |