Polarography of inorganic compounds in acetic acid–acetic anhydride solution

Abstract

Polarographic data for 23 inorganic species in acetic acid-acetic anhydride (20:l. v/v) are reported, the base electrolytes being 0.25~1-sodium perchlorate, 0~25M-sodium acetate, and 0.25~1-iithium chloride. Evidence is presented to show that inorganic ions are solvated less readily in the organic solvent than in aqueous solution, but the order of reduction of ions is similar to that for aqueous solutions, with the exception of nickel, which is reduced much more readily in the non-aqueous solvent. Both acetate and chloride ions are moderately good complexing agents for inorganic ions in the organic solvent.

The Reaction of Electrogenerated Superoxide Ion with Nitroaromatic Amines

“…The homogeneous electron transfer reaction represented by Eq. [6] is rapid with a k2 value of 9 X 107 M -I sec -I ( 8). Estimation of the rate constant, k, for the chemical step represented by Eq.…”

“…[4] and the equilibrium constant K, for the process represented by Eq. [6] is reported below. The product peaks observed at 0.23 and 0.19V in Fig.…”

“…[4] and equilibrium Constants for the process described by Eq. [6], chronoamperometric measurements were employed. The resulting data were analyzed according to the procedure described by Hawley and Feldberg (18).…”

Polarographic Estimation of Ion-Solvent Interaction of the Alkali Metal Ions in Water and Other Solvents

“…has a /~E1/2 for Li(I) similar to that of morpholine. Propylene carbonate (PC) (22) and sulfolane (Sulf) (23)(24)(25), however, would be reordered to follow the nitriles in the potential series. Li(I) is polarographically reduced at the same potential in propionitrile (26) and acetonitrile (27) and at less negative potentials in benzonitrile (26) and phenylacetonitrile (26).…”

“…25), only the work by Coetzee et al(23) is quoted here since the other two investigations report measurements either at 40~ or at temperatures below the natural freezing point of the solvent. The large I values for Li(I) in both PC and sulfolane further support the…”