Hydrated Proton Mobility in Water

Hydrolysis of -propiolactone in concentrated perchloric acid solution [8] 

Just as with pH, the function Hq is a logarithmic function. It is convenient to define its anti-logarithm as 

For low degrees of hydration, Zundel proposed that the (H2O-H+ OH2) ion should also be relatively stable. In fact, the X-ray and neutron diffraction measurements of Kameda 

Acid-Base Catalysis and Proton-Transfer Reactions 

The three steps of mechanism (13.XXIII) correspond to the diffusion of the reactants in solution until an H-bonded complex is formed, followed by the PT step between precursor 

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