Determining the Temperature at which breath condenses

[Lazy]

Hey PF, just a question out of my own curiosity that I've been wondering about.

What type of equations/formulas/ and other things would I need to know to determine at what temperature breath [water vapour from our mouths/lungs] condenses in air ?

I'm guessing something to do with specific heat values, partial pressure, humidity, and other things.

Borek suggested Clausius–Clapeyron, but I have no idea how to apply it.

What would it take for me to somehow "prove" the temperature/ humidity/ air pressure that is required for breath to turn into fog ?

Thanks and discuss away.

 

[Aaron Barnard]

To calculate the temperature at which breath will condense in air, you will need to take into account the specific heat values, partial pressures, humidity, and other factors. The most commonly used equation to calculate this is the Clausius–Clapeyron equation. This equation takes into account the pressure, temperature, and vapor pressure of water vapor at different temperatures. With this equation, you can calculate the temperature at which breath will condense in air for a given set of conditions. You can also experimentally measure the temperature at which breath condenses by measuring the temperature of the air and the relative humidity.