Use of a Glass Electrode in the Potentiometric Study of Acid-Base Equilibria of Zinc and Cadmium Acetates in Acetic Acid
スポンサーリンク
概要
- 論文の詳細を見る
Potentiometric study of acid-base equilibria of zinc and cadmium acetates in acetic acid was undertaken with a glass electrode filled with a LiCl–HClO<SUB>4</SUB> acetic acid solution. Potentiometric titration of 0.1 m LiClO<SUB>4</SUB> acetic acid solution with perchloric acid and lithium acetate reveals that the glass electrode gives rise to the Nernstian response. The equilibrium constant of the reaction, HClO<SUB>4</SUB>+LiOAc \overset<I>K</I><SUB>f</SUB>\rightleftharpoons LiClO<SUB>4</SUB>+HOAc is found as log<I>K<SUB>f</SUB></I>=7.86. The titration of zinc and cadmium acetate with perchloric acid and lithium acetate points to the following equilibria: M(ClO<SUB>4</SUB>)<SUB>2</SUB>+LiOAc \oversetβ<SUB>1</SUB>\rightleftharpoons M(OAc)(ClO<SUB>4</SUB>)+ LiClO<SUB>4</SUB>, M(ClO<SUB>4</SUB>)<SUB>2</SUB>+2LiOAc \oversetβ<SUB>2</SUB>\rightleftharpoons M(OAc)<SUB>2</SUB>+2LiClO<SUB>4</SUB>, M(ClO<SUB>4</SUB>)<SUB>2</SUB>+3LiOAc \oversetβ<SUB>3</SUB>\rightleftharpoons LiM(OAc)<SUB>3</SUB>+2LiClO<SUB>4</SUB>. Logarithmic overall formation constants of the acetato complexes, β<SUB>1</SUB>, β<SUB>2</SUB> and β<SUB>3</SUB> were determined as 4.04, 7.00 and 9.2 respectively for zinc, and 3.43, 5.46 and 8.0 respectively for cadmium. In addition zinc forms tetraacetate complex with the overall formation constant of logβ<SUB>4</SUB>=12.4.
- 公益社団法人 日本化学会の論文
著者
-
Sawada Kiyoshi
Laboratory Of Analytical Chemistry Faculty Of Science Niigata University
-
Tanaka Motoharu
Laboratory of Analytical Chemistry Faculty of Science Nagoya University
-
Nakano Mitsuji
Laboratory of Analytical Chemistry, Faculty of Science, Nagoya University
-
Mori Hidenari
Laboratory of Analytical Chemistry, Faculty of Science, Nagoya University
関連論文
- Simultaneous Ion-Pair Solvent-Extraction Preconcentration of 12 Elements in Natural Water Samples for the Determination by Inductively Coupled Plasma Atomic Emission Spectrometry
- The Selective Chelatometry of Calcium in the Presence of Magnesium with Ethylene Glycol-bis(β-aminoethyl ether)-N,N,N′,N′-tetraacetic Acid
- The dissociation equilibrium of the copper(II) acetate dimer in acetic acid.
- Metal complexes in acetic acid. I. Kinetics and mechanism of reactions of tetra-.MU.-acetato-dicopper(II) with lithium chloride and hydrogen chloride.
- Kinetics of the Ligand Substitution Reaction of the Copper(II)-4-(2-Pyridylazo)resorcinol Complex with (Ethylene glycol)-bis(2-aminoethyl ether)-N,N,N′,N′-tetraacetic Acid
- Kinetic and equilibrium studies on the esterification of monomeric and .MU.-oxo dimeric vanadium(V) complexes with butyl alcohols in chlorobenzene.
- Complexation equilibria of vanadium(V) with 8-quinolinolate in aqueous solutions.
- Dissociation of .MU.-oxo-bis[oxobis(8-quinolinolato)vanadium(V)] and .MU.-oxo-bis[oxobis(4-isopropyltropolonato)-vanadium(V)] in chlorobenzene.
- Kinetics of ligand substitution reaction of some aminopolyacetatonickel(II) complexes with reference to activation parameters.
- Kinetics of the Ligand Substitution Reaction of the Cobalt(II)-(Ethylene glycol)bis(2-aminoethyl ether)-N,N,N′,N′-tetraacetate Complex with 4-(2-Pyridylazo)resorcinol
- Solvent Bulkiness Effect on N,N-Dimethylformamide Exchange of the o-Phenylenediamine-N,N,N',N'-tetraacetatoferrate(III) Complex as Studied by a High-Pressure NMR Method.
- Kinetics and mechanism of complex formation of nickel(II) with 1-(2-pyridylazo)-2-naphthol in acetic acid.
- Kinetics of axial substitution of the iron(II) complex of 2,3,9,10-tetraphenyl-1,4,8,11-tetraaza-1,3,8,10-cyclotetradecatetraene in acetonitrile. Evidence for a dissociative-interchange mechanism.
- Kinetics and mechanism of copper(II), zinc(II), and cadmium(II) incorporation into 5,10,15,20-tetraphenylporphine and N-methyl-5,10,15,20-tetraphenylporphine in N,N-dimethylformamide.
- Kinetics and mechanism of cobalt(II) incorporation into meso-tetra(4-pyridyl)porphine in acetic acid.
- Direct evidence for the peroxo substitution of the oxo group in the oxotitanium(IV) porphyrin complex in the aqueous solution.
- Kinetics and Mechanism of Formation of Monothiocyanato and Mononitrilotriacetato Complexes of Iron(III)
- Use of a Glass Electrode in the Potentiometric Study of Acid-Base Equilibria of Zinc and Cadmium Acetates in Acetic Acid
- Reaction of dimeric copper(II) acetate with pyridine and quinoline bases in dioxane.
- Kinetics and Mechanism of the Ligand Substitution Reaction of the Mercury(II)-4-(2-pyridylazo)resorcinol Complex with 1,2-Cyclohexanediamine-N,N,N′,N′-tetraacetic Acid
- Variable-temperature and variable-pressure nitrogen-14 NMR studies on the exchange reaction of different nitriles at the nickel(II) ion.
- Solvent extraction of copper(II) with lipoic acid in benzene. Evidence for the preferential coordination of carboxylate.