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Styrene was added to a solution of sodium naphthal ene in tetrahydrofuran at 25°C so that the initial concentrations of styrene and sodium naphthalene in the reaction mixture were 0.2 mol/L and 0.001 mol/L, respectively. Five seconds after the addition of styrene its concentration was determined to be 1.73x10-3 mol/L. Calculate (a) overall propagation rate constant; (b) initial rate of polymerization; (c) rate of polymerization after 10 s; and (d) number average molecular weight of the polymer after 10 S. [Ans. (a) kp = 950 L mo!s; (b) (Rp)o = 0.190 mol L- s-; (c) (Rp)10s = 1.422x10-5 mol L-! s-l; (d) (Mw)10s = 20800] %3D %3D %3D %3D

Styrene was added to a solution of sodium naphthal ene in tetrahydrofuran at 25°C so that the initial concentrations of styrene and sodium naphthalene in the reaction mixture were 0.2 mol/L and 0.001 mol/L, respectively. Five seconds after the addition of styrene its concentration was determined to be 1.73x10-3 mol/L. Calculate (a) overall propagation rate constant; (b) initial rate of polymerization; (c) rate of polymerization after 10 s; and (d) number average molecular weight of the polymer after 10 S. [Ans. (a) kp = 950 L mo!s; (b) (Rp)o = 0.190 mol L- s-; (c) (Rp)10s = 1.422x10-5 mol L-! s-l; (d) (Mw)10s = 20800] %3D %3D %3D %3D

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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8.6 Styrene was added to a solution of sodium naphthal ene in tetrahydrofuran at 25°C so that the initial concentrations of styrene and sodium naphthalene in the reaction mixture were 0.2 mol/L and 0.001 mol/L, respectively. Five seconds after the addition of styrene its concentration was determined to be 1.73x10-3 mol/L. Calculate (a) overall propagation rate constant; (b) initial rate of polymerization; (c) rate of polymerization after 10 s; and (d) number average molecular weight of the polymer after 10 S. [Ans. (a) kp = 950 L mo!- s; (b) (Rp), = 0.190 mol L-s; (c) (Rp)10s = 1.422x10-5 mol L- s-1; (d) (Mw)10s %3D %3D 20800]
Transcribed Image Text:8.6 Styrene was added to a solution of sodium naphthal ene in tetrahydrofuran at 25°C so that the initial concentrations of styrene and sodium naphthalene in the reaction mixture were 0.2 mol/L and 0.001 mol/L, respectively. Five seconds after the addition of styrene its concentration was determined to be 1.73x10-3 mol/L. Calculate (a) overall propagation rate constant; (b) initial rate of polymerization; (c) rate of polymerization after 10 s; and (d) number average molecular weight of the polymer after 10 S. [Ans. (a) kp = 950 L mo!- s; (b) (Rp), = 0.190 mol L-s; (c) (Rp)10s = 1.422x10-5 mol L- s-1; (d) (Mw)10s %3D %3D 20800]
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