hydronium meaning in French
ion hydronium
Examples
- Thus, the hydroxide anion ( OH−) is represented by , the hydronium cation ( H3O+) is and the cobalt(III) cation (Co3+) is either or .
Ainsi, l'anion hydroxyde est représenté par , le cation oxonium par , et le cation cobalt III (Co3+) par , ou . - In 1956 with Michael Falk, he obtained the infrared spectrum of the hydronium ion, previously believed to be too short-lived to observe a spectrum.
En 1956 avec Michael Falk, il obtient le spectre infrarouge de l'ion hydronium, ion supposé auparavant d'avoir une durée de vie trop courte pour l'observation d'un spectre. - A freezing-point depression study determined that the mean hydration ion in cold water is approximately H 3O+ (H 2O) 6: on average, each hydronium ion is solvated by 6 water molecules which are unable to solvate other solute molecules.
La géométrie prépondérante déduite de la cryoscopie de l'eau serait H3O+(H2O)6 : chaque ion est en moyenne solvaté par six molécules d'eau, qui ne peuvent plus solvater d'autre ion. - 1884 was also the year when Svante Arrhenius submitted his PhD theses in which he advocated the existence of ions in solution, and defined acids as hydronium ion donors and bases as hydroxide ions donors.
En 1884, comme développement de sa théorie sur les ions, Arrhenius propose aussi une définition des acides et des bases, estimant que les substances acides produisent des ions d'hydrogène en solution, et que les bases produisent des ions hydroxyde en solution. - This implies that the acid dissociation constant K a = {\displaystyle K_{\ce {a}}={\ce {\frac {}{}}}} However a more accurate description is provided by the Brønsted–Lowry acid–base theory, which specifies that the proton H+ does not exist as such in solution but is instead accepted by (bonded to) a water molecule to form the hydronium ion H3O+.
Cela implique que la constante d'acidité vaut K a =