Calculate the vapor pressure at 25? c of hexane above the solution. the vapor pressure of pure hexane at 25? c is 151 torr.

One of the many ways in order to solve for the vapor pressure of pure components at a given temperature is through the Antoine's equation which is written below,

P = 10^ (A - B/C+T)

where A, B, and C are constants and T is the temperature in °C and P is the vapor pressure in mm Hg.

For hexane,

A = 7.01

B = 1246.33

C = 232.988

Substituting the known values,

P = 10^ (7.01 - 1246.33/232.988+25)

P = 151.199 mm Hg