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  • American Institute of Physics (AIP)  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Stochastic behavior and stirring rate effects in the chlorite–iodide reaction (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 89 (1988), S. 6925-6928 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The autocatalytic reaction between chlorite and iodide ions in a closed system is a clock reaction, showing a sudden appearance of brown I2 followed by a rapid disappearance of the color. Under certain conditions, the reaction time displays a striking irreproducibility. This stochastic behavior is studied potentiometrically and spectrophotometrically as a function of initial [I− ], stirring rate and solution volume. The results imply that the irreproducibility is an inherent feature of the reaction generated by fluctuations in the solution after it is "well mixed.'' The key contributors to the stochasticity are local concentration inhomogeneities resulting from imperfect stirring and the "supercatalytic'' reaction kinetics. A qualitative explanation is given that incorporates these aspects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.455316
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Sensitivity analysis of multiple chemical equilibria: Sensitivity coefficients and response equilibria (1995)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 103 (1995), S. 7545-7555 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: For general multiple chemical equilibria it is shown that both the Hessian determinant and the sensitivity coefficients may be presented as sums of contributions coming from two distinct classes of reactions, which we call Hessian and non-Hessian response equilibria (HEQs and NHEQs, respectively), and pairs thereof. This approach is shown to be equivalent to another one in which the Hessian determinant and the sensitivity coefficients are treated in terms of contributions coming solely from HEQs and their pairwise interactions. The results obtained in this work hold irrespective of the type of kinetics (linear or nonlinear) by means of which the equilibrium state is achieved. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.470271
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    Paper (German National Licenses)
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