Relation between Catalytic Constants and Acid Strength

Relation between Catalytic Constants and Acid Strength 

Brpnsted has shown that there is a general relation between the catalytic constant and the dissociation constant of the acid of the form 

Gi increases with increasing positive charge, and a recent detailed analysis of catalytic effects of uncharged bases in the decomposition of nitramide shows that there is a dependence on the structure of the base (Bell and Wilson, 40 Bell, 41). For the mutarotation of glucose at 18°, Ga = 33 X 10 and y = 0.40. For the more accurate results on the acid catalysis of the acetone-iodine reaction at 25°, Gi and x are 120 X lO and 0.62, respectively, in the equation 

From the above it is evident that the proton theory of acids has made possible considerable progress in acidic and basic catalysis and even permitted the quantitative prediction of the activity of new catalysts after a few experiments with other acids or bases. In some cases the prediction can be quite accurate (Kilpatrick and Kilpatrick, 42). 

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III. Relation between Catalytic Constants and Acid Strength. 246... 

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