Answer to Question #169636 in Physical Chemistry for sally

Question

Calculate the pressure differential of ethanol across the surface of a spherical droplet of radius 220 nm at 20°C. The surface tension of ethanol at that temperature is 22.39 mN m -1 .

Answer 1

We know that Pressure= force/area

P= force/Ï€r^2

P= 22.39/3.14×(22×10^-8)^2

P= 2.14×10^-15bar