Answered: Question 1 a) Briefly describe the…

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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Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer.Very very grateful!Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer. Very very grateful!

Transcribed Image Text:Question 1 a) Briefly describe the initial reaction rate method to determine the order of reaction with respect to all reac- tants involved. b) What is the difference between consecutive and simultaneous reactions? Explain the defining characteris- tics. c) In the context of transition state theory, explain how the spacing between energy levels for the ground state and the activated complex affects the activation entropy. What scenario makes for high reaction rate co- efficients. d) What factors determine the average residence time of reagents in a continuous flow reactor? e) Give the relationships between diffusion coefficient, general transport coefficient, and mobility in response to a Newtonian force acting on atomic particles. f) The iodine 123 isotope (1231) is radioactive with a decay half-life time of 7= 13 hours. It is used for medical imaging purposes. Consider a situation where it is applied to an organ tissue in a manner that assures a constant concentration of 123I at the surface. From the surface it diffuses into the organ tissue at a rate characterized by the diffusion coefficient D. As it penetrates, 123I decays to 123Xe by absorbing an electron and emitting a gamma ray. Consequently, 123I decays and effectively vanishes according to a first order reaction and there is a practical limit as to the depth to which 123I can penetrate before it disappears. Es- tablish the rate equation that describes the steady state 123 I concentration profile. This can be done based on a differential balance combining diffusion and reaction terms. (No need to solve the differential equa- tion, but it should correctly reflect the roles of D and 7.)

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