In a calculation I am getting relative humidity more than 100%. What does it suggests? I know this means liquid water is also present in addition to saturated vapour. How should I calculate liquid water content then? Do I have to calculate activity first? Also what happens when I am considering diffusion of water vapour to a dry side (through a membrane)? Does liquid water present will evaporate to compensate drop in partial pressure of water vapour (considering total pressure remains constant)?