Solvent Effects on the Kinetics of Ionic Reactions and the Choice of the Concentration Scale

Autor:	Hubert G. Davis, Victor K. LaMer
Rok vydání:	1942
Předmět:	Quenching (fluorescence) Scale (ratio) Chemistry Diffusion General Physics and Astronomy Ionic bonding Thermodynamics Activation energy Physical and Theoretical Chemistry Solvent effects Mole fraction Rate-determining step
Zdroj:	The Journal of Chemical Physics. 10:585-597
ISSN:	1089-7690 0021-9606
Popis:	The mole fraction scale gives simpler (i.e., more nearly linear) relations between the variables determining kinetics on changing solvents for the bromacetate‐thiosulphate reaction than does the usual volume molar scale. The generality and basis of this finding is discussed from the viewpoint of Rabinowitch's cage model theory as well as from that of equilibrium theory. The quenching of fluorescence, which involves diffusion as a rate determining step, is a more nearly linear function of the fluidity when the data are expressed in mole fraction than in the volume molar scale. Experiments are in progress to determine, if possible, whether the cage model or a modified Smoluchowski diffusion treatment fits the facts better for low activation energy reactions like the quenching of fluorescence in solution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::17535d6b98c3caecb1eaaca9988561c0 https://doi.org/10.1063/1.1723769 Zobrazit plný text záznamu