Oneeq3

Name: Oneeq3 - Kinetic problem    
Source: Shacham, M. and Kehat, E., 1972, Chem. Engng. Sci, 27, 2099
Reference/s Shacham, M. 1989, Chem. Engng. Sci., 44(7), 1495
       
Model: 1 implicit equation, indep. variable name: T
  Higher difficulty level
  Constraints: T>0
  Initial range: Tmin=550, Tmax=560
       
Solved by Shacham, M., POLYMATH 5.1, build 19, Nov. 17, 2000
       
Model Eqs. Kinetic problem |POLVER05_1

EXCEL FILE 

f(T) = exp(21000/T)/T^2-1.11e11 #

TEXT FILE 

T(min)=550, T(max)=560

POLYMATH FILE 

 

Variable/function values Variable Value f(x)
  T 555

-2.3062E+10
       
Root Variable Value f(x)
  T

551.773822885233

-3.3203E-02
       
Additional information Substracting two numbers of the order of 1011 yields
  large function value at the root, making the root
  identification difficult.
       
Function plot