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Q2 : A solid spherical benzoic acid particle with a diameter of 5 mm dissolves in a large volume of pure water tank at 25 °C. Calculate the diffusion rate of benzoic acid from the solid surface to the liquid bulk solution. Molecular diffusion takes place through a homogeneous liquid film surrounding the solid particle. On the inside of the film adjacent to the solid surface, the solution is saturated with benzoic acid, while on the outside of the film the solution is almost pure water. The solubility of benzoic acid in water at 25 °C is 0.34 g/100 g water. The molecular diffusion coefficient of the benzoic acid-water system at 25 °C and 1 atm is 1.25x10-9 m2/s. The density of the saturated solution is 996 kg/m³.

Q2 : A solid spherical benzoic acid particle with a diameter of 5 mm dissolves in a large volume of pure water tank at 25 °C. Calculate the diffusion rate of benzoic acid from the solid surface to the liquid bulk solution. Molecular diffusion takes place through a homogeneous liquid film surrounding the solid particle. On the inside of the film adjacent to the solid surface, the solution is saturated with benzoic acid, while on the outside of the film the solution is almost pure water. The solubility of benzoic acid in water at 25 °C is 0.34 g/100 g water. The molecular diffusion coefficient of the benzoic acid-water system at 25 °C and 1 atm is 1.25x10-9 m2/s. The density of the saturated solution is 996 kg/m³.

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
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Q2 : A solid spherical benzoic acid particle with a diameter of 5 mm dissolves in a large volume of pure water tank at 25 °C. Calculate the diffusion rate of benzoic acid from the solid surface to the liquid bulk solution. Molecular diffusion takes place through a homogeneous liquid film surrounding the solid particle. On the inside of the film adjacent to the solid surface, the solution is saturated with benzoic acid, while on the outside of the film the solution is almost pure water. The solubility of benzoic acid in water at 25 °C is 0.34 g/100 g water. The molecular diffusion coefficient of the benzoic acid-water system at 25 °C and 1 atm is 1.25x10-9 m2/s. The density of the saturated solution is 996 kg/m³.
Transcribed Image Text:Q2 : A solid spherical benzoic acid particle with a diameter of 5 mm dissolves in a large volume of pure water tank at 25 °C. Calculate the diffusion rate of benzoic acid from the solid surface to the liquid bulk solution. Molecular diffusion takes place through a homogeneous liquid film surrounding the solid particle. On the inside of the film adjacent to the solid surface, the solution is saturated with benzoic acid, while on the outside of the film the solution is almost pure water. The solubility of benzoic acid in water at 25 °C is 0.34 g/100 g water. The molecular diffusion coefficient of the benzoic acid-water system at 25 °C and 1 atm is 1.25x10-9 m2/s. The density of the saturated solution is 996 kg/m³.
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