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Chemistry

Portland State University

Chemical kinetics

Publication Year

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Full-Text Articles in Physical Sciences and Mathematics

Oxyhalogen-Sulfur Chemistry: Kinetics And Mechanism Of Oxidation Of N-Acetylthiourea By Aqueous Bromate And Acidified Bromate, Kudzanai Chipiso, Wilbes Mbiya, Thai Tran, Reuben H. Simoyi Jan 2016

Oxyhalogen-Sulfur Chemistry: Kinetics And Mechanism Of Oxidation Of N-Acetylthiourea By Aqueous Bromate And Acidified Bromate, Kudzanai Chipiso, Wilbes Mbiya, Thai Tran, Reuben H. Simoyi

Chemistry Faculty Publications and Presentations

The oxidation of N-acetylthiourea (ACTU) by acidic bromate has been studied by observing formation of bromine in excess bromate conditions. The reaction displays an induction period before formation of bromine. The stoichiometry of the reaction was determined to be 4:3: 4BrO 3 – +3(CH 3 CO)NH(NH 2 )C=S+3H 2 O®4Br – +3(CH 3 CO)NH(NH 2 )C=O+3SO 4 2– +6H + (A) with a complete desulfurization of ACTU to its urea analogue. In excess bromate conditions the stoichiometry was 8:5: 8BrO 3 – + 5(CH 3 CO)NH(NH 2 )C=S + H 2 O ® 4Br 2 + 5(CH 3 CO)NH(NH 2 …


Statistical Thermodynamics And Kinetics Of Dna Multiplex Hybridization Reactions, Albert S. Benight, M. T. Horne, D. J. Fish Dec 2006

Statistical Thermodynamics And Kinetics Of Dna Multiplex Hybridization Reactions, Albert S. Benight, M. T. Horne, D. J. Fish

Chemistry Faculty Publications and Presentations

A general analytical description of the equilibrium and reaction kinetics of DNA multiplex hybridization has been developed. In this approach, multiplex hybridization is considered to be a competitive multichannel reaction process: a system wherein many species can react both specifically and nonspecifically with one another. General equations are presented that can consider equilibrium and kinetic models of multiplex hybridization systems comprised, in principle, of any number of targets and probes. Numerical solutions to these systems for both equilibrium and kinetic behaviors are provided. Practical examples demonstrate clear differences between results obtained from more common simplex methods, in which individual hybridization …