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Calculate the surface tension for the solid/water interface (sw) if the droplet adopted a shape with the contact angle 60°. What is the surface tension for the solid/water interface (Ysw) if the droplet spreads over the surface? Estimate the average displacement of a molecule of a surfactant over the surface of the droplet within 0.001 s if the diffusion coefficient is 10-1⁰ m² s-1.

Calculate the surface tension for the solid/water interface (sw) if the droplet adopted a shape with the contact angle 60°. What is the surface tension for the solid/water interface (Ysw) if the droplet spreads over the surface? Estimate the average displacement of a molecule of a surfactant over the surface of the droplet within 0.001 s if the diffusion coefficient is 10-1⁰ m² s-1.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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(d) A small droplet of water is placed on a solid surface immersed in oil. The surface tension for solid/oil interface (yso) is 60 mN m-1 and for water/oil interface (wo) is 40 mN m-¹. • Calculate the surface tension for the solid/water interface (sw) if the droplet adopted a shape with the contact angle 60°. • What is the surface tension for the solid/water interface (Ysw) if the droplet spreads over the surface? • Estimate the average displacement of a molecule of a surfactant over the surface of the droplet within 0.001 s if the diffusion coefficient is 10-1⁰ m² s-1.
Transcribed Image Text:(d) A small droplet of water is placed on a solid surface immersed in oil. The surface tension for solid/oil interface (yso) is 60 mN m-1 and for water/oil interface (wo) is 40 mN m-¹. • Calculate the surface tension for the solid/water interface (sw) if the droplet adopted a shape with the contact angle 60°. • What is the surface tension for the solid/water interface (Ysw) if the droplet spreads over the surface? • Estimate the average displacement of a molecule of a surfactant over the surface of the droplet within 0.001 s if the diffusion coefficient is 10-1⁰ m² s-1.
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