Results 71 to 80 of about 113 (96)

Quasireversible Is Irreversible Dressed up

ECS Meeting Abstracts, 2016
Diffusion and convection to an electrode with an irreversible reaction is allegedly a much simpler mass-transport problem than the same problem for a quasireversible reaction. This seems self-evident, since in the quasireversible case the mass transport of the product species has to be included, not just the reactant species.
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Quasireversible Linear Potential Sweep Voltammetry: An Analytic Solution for Rational .alpha.

Analytical Chemistry, 1994
An analytic solution is presented to the problem of predicting the shape of a linear-potential-sweep voltammogram for a quasireversible electrode process under the conditions usually encountered in voltammetric experiments. It is necessary to assume that the transfer coefficient is a rational number, but in practice, this is not an important ...
Jan C. Myland, Keith B. Oldham
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Application of square wave voltammetry to strongly adsorbed quasireversible redox molecules

Analytical Chemistry, 1993
The theory and application of square wave voltammetry to surface-confined quasi-reversible redox molecules (Ox+ne - =Red) is described. Theoretical voltammograms were calculated based on the following assumptions: (1) stable redox states ; (2) monolayer or less surface coverage; (3) equivalent surface sites and adsorbates; (4) non adsorbate-adsorbate ...
James H. Reeves, Shihua. Song, Edmond F. Bowden   +2 more
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Filtering formulas and the ./M/1 queue in a quasireversible network

Stochastics, 1981
This paper proposes an elementary justification of the filtering formulas for a Markov chain and an analysis of the arrival and departure processes at a ./M/1 queue in a quasireversible network. It is shown that the interarrival time distributions of the two above mentioned processes are always identical under equilibrium.
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Electrochemical study of methylcobalamin Determination of the reduction potential for a quasireversible system with a fast following reaction

Talanta, 1992
The reductive electrochemistry of methylocobalamin in nonaqueous solution is typical of many electrochemical mechanisms in that the initial electron transfer at the electrode is followed by a fast chemical reaction. The rate constant of the following chemical step, methyl radical cleavage, was measured by double potential step chronoamperometry to be ...
Q, Huang, D K, Gosser
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Distributional approximations for networks of quasireversible queues

1984
This paper is concerned with establishing Poisson approximations to flows in general queueing networks. Bounds are provided to assess the departure of a given flow from Poisson and these lead to simple criteria for good Poisson approximations. The class of networks considered here are those with a countable collection of customer classes and where the ...
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Diagnostic Criteria for the Characterization of Quasireversible Electron Transfer Reactions by Cyclic Square Wave Voltammetry

Analytical Chemistry, 2014
Theory for cyclic square wave voltammetry of quasireversible electron transfer reactions is presented and experimentally verified. The impact of empirical parameters on the shape of the current-voltage curve is examined. From the trends, diagnostic criteria enabling the use of this waveform as a tool for mechanistic analysis of electrode reaction ...
Megan A, Mann, John C, Helfrick, Lawrence A, Bottomley   +2 more
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Measurements of redox kinetics of adsorbed azobenzene by “a quasireversible maximum” in square-wave voltammetry

Electrochimica Acta, 1995
Abstract The standard redox reaction rate constants of azobenzene adsorbed to the mercury electrode are k s = 350 ± 25 s − 1 in the acidic perchlorate medium (pH 2) and k s = 175 ± 20 s − 1 in the acetate buffer pH 4.7. Under the influence of 0.2%, 0.5% and 1% acetonitrile in these electrolytes, the rate constants are reduced to 265 ...
Šebojka Komorsky-Lovrić, Milivoj Lovrić   +1 more
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Pseudopolarography of trace metals. Part II. The comparison of the reversible, quasireversible and irreversible electrode reactions

Journal of Electroanalytical Chemistry, 2004
The theoretical and experimental pseudopolarographic curves of the reversible, quasireversible and irreversible electrochemical reaction were compared and evaluated. The measurements were performed on a stationary mercury drop electrode (SMDE, PAR 303A), using a differential pulse anodic stripping voltammetry (DPASV).
Omanović, Dario, Branica, Marko
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Theory of square-wave voltammetry of quasireversible electrode reactions using an inverse scan direction

Electrochimica Acta, 2010
The standard rate constant of a simple electrode reaction Ox + ne- ↔ Red, in which both Ox and Red are solution soluble, can be determined by the variation of frequency in the square-wave voltammetry with inverted scan direction: log ks = log f01/2 + log D1/2 - 0.60 ± 0.01.
Lovrić, Milivoj, Jadreško, Dijana
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