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The work of adhesion (W) is the energy per unit area associated with bringing two immiscible liquids into contact. The equation below relates the work of adhesion to the surface tensions of the pure liquids (71 and y2 ) and the interfacial tension (712 ): W = (A – BY12) √/Y1Y2 In this equation, W has units of erg/cm², and the surface tensions and interfacial tensions ( 71, 72, and y12 ) have units of dyn/cm. The numerical values A and B are 4.60 and 0.236 respectively. a) What are the units of the constant A? b) What are the units of the constant B? c) If the work of adhesion were in J/cm² and the tensions in lbf /in, what would be the units of A and B? What would be the numerical values of A and B?

The work of adhesion (W) is the energy per unit area associated with bringing two immiscible liquids into contact. The equation below relates the work of adhesion to the surface tensions of the pure liquids (71 and y2 ) and the interfacial tension (712 ): W = (A – BY12) √/Y1Y2 In this equation, W has units of erg/cm², and the surface tensions and interfacial tensions ( 71, 72, and y12 ) have units of dyn/cm. The numerical values A and B are 4.60 and 0.236 respectively. a) What are the units of the constant A? b) What are the units of the constant B? c) If the work of adhesion were in J/cm² and the tensions in lbf /in, what would be the units of A and B? What would be the numerical values of A and B?

Introduction to Chemical Engineering Thermodynamics
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
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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The work of adhesion (W) is the energy per unit area associated with bringing two immiscible liquids into contact. The equation below relates the work of adhesion to the surface tensions of the pure liquids (7₁ and y2 ) and the interfacial tension ( 112 ): W = (A - BY12) √717/2 In this equation, W has units of erg/cm², and the surface tensions and interfacial tensions ( 71, 72, and y12 ) have units of dyn/cm. The numerical values A and B are 4.60 and 0.236 respectively. a) What are the units of the constant A? b) What are the units of the constant B? c) If the work of adhesion were in J/cm² and the tensions in lbf /in, what would be the units of A and B? What would be the numerical values of A and B?
Transcribed Image Text:The work of adhesion (W) is the energy per unit area associated with bringing two immiscible liquids into contact. The equation below relates the work of adhesion to the surface tensions of the pure liquids (7₁ and y2 ) and the interfacial tension ( 112 ): W = (A - BY12) √717/2 In this equation, W has units of erg/cm², and the surface tensions and interfacial tensions ( 71, 72, and y12 ) have units of dyn/cm. The numerical values A and B are 4.60 and 0.236 respectively. a) What are the units of the constant A? b) What are the units of the constant B? c) If the work of adhesion were in J/cm² and the tensions in lbf /in, what would be the units of A and B? What would be the numerical values of A and B?
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