Acidity constants of diprotic acids from potentiometric titrations: Principles of the calculation illustrated through the construction of a simple algorithmdoi:10.1590/S0100-40422011000600027Elsa M GoncalvesAntonio Conceicao
Details are given of a method for the determination of dissociation constants of acids by simple solubility measurements. The method is particularly useful for dibasic acids whose solubility in aqueous solution of low pH is too low to be determined precisely by normal analytical methods. The dissocia...
Equilibria of Weak Acids & Bases Part VI: Polyprotic Acids Acidity and Alkalinity Definitions Alkalinity Measurement Task Acidity Measurement Importance What are Acidity and Alkalinity Acidity The capacity of a water sample to neutralise added alkali. Two Types Mineral Acidityfrom S...
Superacidity of boron acids H2(B12X12) (X = Cl, Br). Acid remarks : The anhydrous diprotic boron acids H2(B12X12) (X=Cl, Br; see picture, B orange, X green) are the first examples of diprotic superacids and m... A Avelar,FS Tham,CA Reed - 《Angewandte Chemie》 被引量: 17...
Tetraprotic acids, H4SiW12O40 and H4SiMo12O40, give better surface exchange yields and result in solids with greater acid site number per anion and strength. The major part of immobilized PW, SiW, PMo and SiMo anions in the as-prepared...
(only 0.5 mol% based on aliphatic acids, and the weight ratio to total reactants is less than 1%) was investigated. Five SO3H-functionalized ionic liquids showed high catalytic activity, and excellent reusability could also be achieved. Additionally, the acidity of the catalyst is crucial for ...
The erroneous choice of the limit absorbances of a diprotic acid leads to the inaccurate acidity constants to be evaluated. The errors thus implied are calculated for two hypothetical systems. In addition, two practical systems, isonicotinic acid and 1,3-bis [(2-pyridyl)methyleneamino]guanidine ...
Numerical method for the spectrophotometric evaluation of overlapping acidity constants of diprotic acidsdoi:10.1007/BF00498181A. G. AsueroDepartment of BromatologyM. A. HerradorDepartment of BromatologyA. M. JimenezDepartment of BromatologyM. J. Navas...
Acid remarks : The anhydrous diprotic boron acids H2(B12X12) (X=Cl, Br; see picture, B orange, X green) are the first examples of diprotic superacids and may be the strongest acids yet isolated. Both protons protonate benzene to give benzenium ion salts that are stable at room ...
Benko, Determination of acidity constants of mono- protic and diprotic acids by capillary electrophoresis, J. Chromatogr. A 745 (1996) 117-125.EdwadB Walker,Jeffrey C,Walker J.Determination of acidity constants of monoprotic and diprotic acid by capillary electrophoresis[J].Chromatog A,1996,745...