Bicarbonate-mediated proton transfer requires cations.

ABSTRACT: Near-neutral HCO₃^- aqueous solution plays an essential role in respiratory, mineralization and catalysis, yet the interconversion between hydrated CO₂, HCO₃^- and CO₃^2- and the associated proton transfer under such proton-deficient conditions remain uncovered. Here we reveal that cation enables HCO₃^- to self-dissociate into OH^- and CO₂ through a pH-independent process, where CO₂ hydration and subsequent proton transfer in acid-base reactions lead to the overall exchange of oxygen isotopes between HCO₃^- and H₂O tracked by oxygen isotope-labeled Raman spectroscopy. Isolating HCO₃^- from cations with crown ethe

SUBMITTER: Wu Q 

PROVIDER: S-EPMC11500353 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature