Calculating change in vapour pressure using Kelvin Equation

This CalcTown calculator calculats the change in vapour pressure due to a curved liquid/vapor interface (meniscus) using kelvin equation.

Temperature

Molar Volume (V _m)

Radius of the droplet (r)

Surface Tension

N/m

Ratio of actual VP to saturated VP (p/p₀)

For water, molar volume is generally taken to be 18 mL , while for mercury, it is taken to be 14.8 mL