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5. In the study of the reaction between n-propyl bromide and sodium thiosulphate C;H̟B^(A) S̟O (B) Br¯ + + the reaction was followed by withdrawing samples from time to time, adding water to stop the reaction and titrating the residual thiosulphate with standard io solution. The data were used to calculate CA as a function of time as given in following table:

5. In the study of the reaction between n-propyl bromide and sodium thiosulphate C;H̟B^(A) S̟O (B) Br¯ + + the reaction was followed by withdrawing samples from time to time, adding water to stop the reaction and titrating the residual thiosulphate with standard io solution. The data were used to calculate CA as a function of time as given in following table:

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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5. In the study of the reaction between n-propyl bromide and sodium thiosulphate, i.e. C,H¸Bº(A) S,O (B) C,H,Br¯ Br + the reaction was followed by withdrawing samples from time to time, adding iced water to stop the reaction and titrating the residual thiosulphate with standard iodine solution. The data were used to calculate CA as a function of time as given in the following table: t (sec) 1,110 2.010 3,192 5,052 7,380 11,232 78,840 0.0395 0.0328 0.0292 0.0244 0.0195 0.0149 0.0097 СА -3 mol dm At a time of 78,840 seconds the reaction may be considered complete. The initial concentration of sodium thiosulphate is 0.0966 M. From the given data determine the order of the reaction and calculate the rate constant at 37.5 °C. Hints i) Guess a likely reaction order and rate equation and see whether the above data gives a linear plot when inserted into the appropriate integrated rate equation. ii) Note that the initial concentrations of n-propyl bromide and thiosulphate are not equal.
Transcribed Image Text:5. In the study of the reaction between n-propyl bromide and sodium thiosulphate, i.e. C,H¸Bº(A) S,O (B) C,H,Br¯ Br + the reaction was followed by withdrawing samples from time to time, adding iced water to stop the reaction and titrating the residual thiosulphate with standard iodine solution. The data were used to calculate CA as a function of time as given in the following table: t (sec) 1,110 2.010 3,192 5,052 7,380 11,232 78,840 0.0395 0.0328 0.0292 0.0244 0.0195 0.0149 0.0097 СА -3 mol dm At a time of 78,840 seconds the reaction may be considered complete. The initial concentration of sodium thiosulphate is 0.0966 M. From the given data determine the order of the reaction and calculate the rate constant at 37.5 °C. Hints i) Guess a likely reaction order and rate equation and see whether the above data gives a linear plot when inserted into the appropriate integrated rate equation. ii) Note that the initial concentrations of n-propyl bromide and thiosulphate are not equal.
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