โ Scribed by Sachiko Sakura; Heung Lark Lee; Taitiro Fujinaga
No coin nor oath required. For personal study only.
Sodium and lithium ions are not reduced at the dropping mercury electrode in hexamethylphosphoric triamide containing 0.05 mol dm-3 tetraethylammonium perchlorate while rubidium and caesium ions show diffusion controlled, l-electron reduction waves. Thereduction of potassium ion is partially kinetic. When increasing amount of water is added to the solution, reduction waves of sodium and lithium begin to appear, and the. kinetic contribution of potassium wave gradually disappears to give a diffusion controlled wave. The diffusion controlled waves ofrubidium and caesium ions are essentially unaffected. The addition of methanol, ethanol, I-buthanol and dimethyl sulfoxide also has similar enhancing effects, which is attributed to the acceleration of the desolvation process by protons. These effects of protic solvent areapparently similar to that of the cation size of the supporting electrolytes, but of different @in, as indicated by the different behavior of the electrocapillary curves.
๐ SIMILAR VOLUMES