The formula to calculate the Partial Pressure of Water Vapour is:
\[ \text{Partial Pressure} = \frac{\text{Pressure of Gas} \times 1.8 \times \text{Atmospheric Pressure} \times \text{Temperature Difference}}{2700} \]
Partial Pressure is the notional pressure of that constituent gas if it alone occupied the entire volume of the original mixture at the same temperature. The Pressure of Gas is the force that the gas exerts on the walls of its container. Atmospheric Pressure, also known as barometric pressure, is the pressure within the atmosphere of Earth. Temperature Difference is the measure of the hotness or the coldness of an object.
Let's assume the following values:
Using the formula:
\[ \text{Partial Pressure} = \frac{0.215 \times 1.8 \times 101325 \times 29}{2700} \approx 421.17425 \, \text{Pascals} \]
The Partial Pressure of Water Vapour is approximately 421.17425 Pascals.
| Pressure of Gas (Pascals) | Partial Pressure (Pascals) |
|---|---|
| 0.2 | 391.790000000000077 |
| 0.21 | 411.379500000000064 |
| 0.22 | 430.968999999999994 |
| 0.23 | 450.558500000000095 |
| 0.24 | 470.148000000000138 |
| 0.25 | 489.737500000000182 |
| 0.26 | 509.327000000000112 |
| 0.27 | 528.916500000000156 |
| 0.28 | 548.506000000000085 |
| 0.29 | 568.095500000000243 |