A kinetic analysis of the protolysis reactions of di‐ and trimethylammonium ions in aqueous solution has been carried out using the nuclear magnetic resonance technique. The results complement those of a similar study of methylammonium ion reported on in an earlier paper. In the pH range studied (between 3 and 5) the main mechanism is: RNH++RN⇆RN+RNH+. The reaction involves water in nearly every exchange. The measured rate constants are: 6.0×108 and 3.1×108 sec—1M—1 for di‐ and trimethylammonium, respectively.
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For a preliminary report see
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© 1957 American Institute of Physics.
1957
American Institute of Physics
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