Question #1a274
1 Answer
Jul 21, 2015
Using Dalton's Law, but there is no way to calculate relative humidity with only temperature.
Explanation:
The way it works is that if you know the total pressure of the air you can calculate the partial pressure of each of the component gases if you know the mole fraction of that gas.
For example, atmospheric nitrogen has a mole fraction of 0.78. That means that it partial pressure is going to be 78% of the atmospheric pressure.
Relative Humidity is the amount of water vapor in the air as a percentage of the amount of water vapor it could hold at that temperature. Since the actual amount of water vapor(mixing ratio or absolute humidity) is variable, and temperature is variable, there is no way of knowing the RH only knowing the temperature.
