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On the Interpretation of Reaction Rates in Concentrated Acid Solutions
Author(s) -
Yagil G.
Publication year - 1971
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.197100050
Subject(s) - chemistry , proton , molecule , interpretation (philosophy) , subtraction , computational chemistry , thermodynamics , organic chemistry , quantum mechanics , physics , computer science , programming language , arithmetic , mathematics
The model of Bascombe and Bell for the indicator acidity of concentrated acid solutions is applied to the analysis of acid catalyzed reactions. A number of well studied reactions are shown to obey the relationship:where C w is the molar concentration of water not bound to proton (or to hydroxyl OH − ). Values of C w for use in the above correlation are calculated, assuming the existence of the proton in the form suggested by Eigen, H 3 O(H 2 O) 3 + . The volume fractions of nonbound water are also calculated, this quantity giving even better correlation in some cases. Values of n are obtained which agree, after subtraction of water molecules given up by the proton, with the number of water molecules which can be expected to participate in the formation of the transition state of these reactions.