When the Clausius-Clapeyron equation for saturation vapor pressure over liquid water is derived via the Carnot cycle, it is usually assumed that there is only gaseous water above the liquid. The other atmospheric gases are neglected.
However, in common settings (lake, glass of water...), the atmospheric gases exert much higher pressure on the liquid surface than the water vapor. Does this large pressure affect the saturation vapor pressure somehow? I guess that the correction is small, perhaps since the additional atmospheric pressure is too low to change the volume of liquid water significantly...
However, in common settings (lake, glass of water...), the atmospheric gases exert much higher pressure on the liquid surface than the water vapor. Does this large pressure affect the saturation vapor pressure somehow? I guess that the correction is small, perhaps since the additional atmospheric pressure is too low to change the volume of liquid water significantly...