[Arachnid2209]

Hello,

I recently conducted an experiment where in a closed system, I let an alcohol reach equilibrium with its vapour, so the rate of condensation equals the rate of evaporation. Basically, the air is saturated with the alcohol vapour. I then measured the change in volume of liquid alcohol, and I want some way of expressing the equilibrium. Would you recommend the typical Kc=products/reactants for this or is there a better way of expressing the relationship?

[mjc123]

The equilibrium in this case is the vapour pressure of the liquid, which is constant at a given temperature.