# Is vapour pressure a surface phenomenon?

As a fact, I know that vapour pressure doesn't depend on surface area.

Does this imply it is not a surface phenomenon also?

It shouldn't be as then it would depend on surface area of molecules and the mole fraction of liquid in a solution violating the definition of colligative properties.

If not, then why doesn't it depend on surface area exposed?

vapour pressure doesn't depend on area

• Note that it does depend on the shape of the surface as $$p=p_{\mathrm{0}} + \frac{2\gamma}{r}$$ where $p$ is saturated vapour pressure over a spherical liquid particle of radius $r$ and surface tension $\gamma$ , p0 is the ordinary saturated vapour pressure over flat surface. – Poutnik May 22 at 8:29
• This is why is a Pressure, isn't? – Alchimista May 22 at 9:50