The diffusivity of the vapor of a volatile liquid in air can be estimated by passing air stream to ensure the vapor remains approximately zero $)=(0$ over a narrow diameter vertical tube with the liquid, maintained at a constant temperature.

The evaporation of the acetone $(MW=58$; Density $=780k\frac{g}{m^3})$ takes place from a narrow glass tube held at a constant temperature in a water bath maintained at $318K.$ The total pressure of the air $1\mathrm{.}01325{10}^{5}Pa(1\mathrm{.}0$atm$).$ Acetone evaporates and diffuses through the air in the tube. The interface readings are shown in the table. Draw a plot of $\frac{t}{Z_i-Z_0}vs.(Z_i-Z_0)$ using the following equation,