申論題

8.(20%) Consider solvent A stored in a container and solvent A is Stream of B evaporating into gas B as the right diagram. The liquid level maintains at z=0 cm and the vapor pressure of solvent A in this level is 33 mmHg. A stream of gas am of gas B low ws slowly past the top of the container to maintain 755 mmHg at z=17.1 cm. The entire system is kept at 0℃ and 755 mmHg.
Solvent A vapor and gas B are ass sumed to be ideal and the cross-scction area of the container is 0.82 cm². If we can find that 0.0208 cm³of solvent A evaporated in 10 h after steady-statc. Please determi mine the value of diffusi of diffusion coefficien ? Where the density of solvent A is 1.59 g/cm³, the molecular weight is 154 g/gmol and gas constant is 82.05 (cm³●atmvgmol●K). Please state clearly the assumption when you solve the problem.