Abstract
Using pressure-jump, concentration-jump, and stopped-flow methods, we have studied the rate of dehydration (k−1) of carbonic acid as a function of temperature (0–40°C) and ionic strength (0.005–3M NaCl, 3M LiBr) in both H2O and D2O. A new design of pressure-jump cell with reliable temperature control, as well as improved sensitivity in the spectrophotometric detection for stopped flow, enabled k−1 values to be determined with an accuracy better than ±8%, based on a comparison of results obtained using five different techniques. The influence of ionic strength, temperature, and isotope effects are discussed.
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Patel, R.C., Boe, R.J. & Atkinson, G. The CO2-water system. I. Study of the slower hydration-dehydration step. J Solution Chem 2, 357–372 (1973). https://doi.org/10.1007/BF00713250
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DOI: https://doi.org/10.1007/BF00713250