2. At 25°C the surface tension of benzene is 28.9 mN/m and its molar volume is 89.2 cm³/mol. Determine the relative pressures at which condensation of benzene vapour should begin in a cylindrical capillary of radius 20 nm if the capillary is (a) closed at one end, (b) open at both ends. Assume zero contact angle and neglect adsorption on the walls of the capillary.

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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2. At 25°C the surface tension of benzene is 28.9 mN/m and its molar volume is 89.2 cm³/mol.
Determine the relative pressures at which condensation of benzene vapour should begin in a
cylindrical capillary of radius 20 nm if the capillary is (a) closed at one end, (b) open at both
ends. Assume zero contact angle and neglect adsorption on the walls of the capillary.
Transcribed Image Text:2. At 25°C the surface tension of benzene is 28.9 mN/m and its molar volume is 89.2 cm³/mol. Determine the relative pressures at which condensation of benzene vapour should begin in a cylindrical capillary of radius 20 nm if the capillary is (a) closed at one end, (b) open at both ends. Assume zero contact angle and neglect adsorption on the walls of the capillary.
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