Results 301 to 310 of about 380,728 (341)
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Use of hydration and dissociation chemistries with the electrolyte–NRTL model
AIChE Journal, 1999AbstractSound theoretical understanding and accurate mathematical representation of electrolyte solution nonideality were the subject of extensive research efforts for decades. It is demonstrated that these goals can be achieved by incorporation of hydration and partial dissociation chemistries with the semi‐empirical electrolyte NRTL model.
Hasan Orbey +2 more
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Associating Physics and Chemistry to Dissociate Molecules
Historical Studies in the Natural Sciences, 2016A case study of the Clausius-Williamson hypothesis sheds light on the development of the physical sciences during the nineteenth century. In the 1850s, Rudolf Clausius and Alexander William Williamson independently developed similar hypotheses at a time when physics and chemistry were beginning to be considered independent endeavors.
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The spectrum of a dissociation intermediate of cysteine: a biophysical chemistry experiment
Journal of Chemical Education, 1988An elegant experiment that integrates the basic concepts of physical and biological chemistry in the study of cysteine.
L. L. Chinander, A. G. Splittgerber
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Excited-State Acid−Base Chemistry: Evidence for a Dissociative Excited State [PDF]
Inorganic Chemistry, 2003 Excitation (410 nm) of the bimetallic [(bpy)(2)Ru(CN)(mu-CN)Rh(NH(3))(4)Br](2+) produces the MLCT state localized on the (bpy)(2)Ru(CN)(2) ligand. Photoinduced cleavage of the bimetallic occurs in the presence of [H(+)], and the dependence yields a K(a) equivalent to that for ground-state cis-(bpy)(2)Ru(CN)(2) implying separation of the bimetallic ...
Jianwei Fan +7 more
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Molecular ion collision chemistry in CH4 ionization and dissociation
International Journal of Mass Spectrometry, 2016Abstract The use of the 90° hemispheric electrostatic high resolution analyzer in conjunction with the time-of-flight (TOF) technique allowed us to identify various species associated with the ionization of methane molecular gas by a pulsed fast 19 MeV F4+ beam.
T.J. Gray, A Hasan
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Orbital specific chemistry: Controlling the pathway in single-molecule dissociation
The Journal of Chemical Physics, 2005A scanning tunneling microscope (STM) was used to control the pathway of the dissociation of single O2 molecules chemisorbed on Ag(110) at 13K. Tunneling of electrons from the STM tip into the O2 caused dissociation of the molecule, giving rise to two adsorbed O atoms separated along the [11¯0] direction. In contrast, the ejection of electrons from the
J. R. Hahn, Wilson Ho
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Intriguing roles of reactive intermediates in dissociation chemistry of N-phenylcinnamides
Organic & Biomolecular Chemistry, 2012In mass spectrometry of protonated N-phenylcinnamides, the carbonyl oxygen is the thermodynamically most favorable protonation site and the added proton is initially localized on it. Upon collisional activation, the proton transfers from the carbonyl oxygen to the dissociative protonation site at the amide nitrogen atom or the α-carbon atom, leading to
Ziming Xia +5 more
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Dissociative Recombination Chemistry and Plasma Dynamics
2008Abstract : Advances made in the study of the dissociation dynamics and product branching ratios of energized transient neutral molecules formed by charge-transfer (DCE) and recombination of cations with free electrons (DR) are reviewed. The results obtained include detailed measurements of the three-body dissociation of H3, O4 and sym-triazine (HCN)3 ...
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Band spectra and dissociation energies: A physical chemistry experiment
Journal of Chemical Education, 1962An experiment that has proved successful in introducing the spectroscopic determination of molecular energy levels and thermodynamic quantities is the analysis of the visible band spectrum of either iodine or bromine. In addition, this experiment introduces techniques now widely used in high temperature and astro-chemical studies.
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Dissociation Processes in Plasma Chemistry and Gaseous Dielectrics
1991Plasma processing is widely used in integrated circuit manufacturing. In a typical plasma process a chemically nonreactive feed gas flows into a discharge reactor where the discharge electrons dissociate the feed gas and produce chemically reactive products.
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