Acidity Scale of 1,3-Dialkylimidazolium Salts in DMSO SolnChu, YDeng, HCheng, J P
VII. The H2- Acidity Scale An H2- scale has been established for four systems containing quaternary ammonium hydroxide-water, pyridine-water, sulfolane-water, and dimethyl sulfoxide-water. H2- = - log aH+fA2-/fHA- and is a measure of the ability of a solvent to io... K Bowden,A ...
Theoretical calculations and experimental values from the recent literature are used to construct and evaluate a high precision gas-phase acidity scale. Gas-phase acidities at 0 K are evaluated for 12 reference species with accurately known acidities. Using recent spectroscopic results, small but sign...
Here we show that the acidity scale for binary oxides is a powerful descriptor for tuning and predicting oxygen surface exchange kinetics on mixed conducting oxides. By infiltrating a selection of binary oxides from strongly basic (Li2O) to strongly acidic (SiO2) onto the surface of Pr0.1Ce0.9...
The trend in the change of cations and anions concentration during the precipitation of calcium carbonate was studied,and a new method of evaluating scale inhibitors′ efficiency was proposed via acid-base titration. 研究了碳酸盐垢成垢过程中成垢阴、阳离子浓度的变化规律,并在此基础上提出了利用酸碱滴...
pH,pH scale- (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7...
pH,pH scale- (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7...
Definition of Acids and Bases Acids and bases are opposing parts of a sliding scale known as pH. The pH scale measures the amount of positive hydrogen ions, henceforth H+, that are in a solution in relation to the amount of hydroxide ions, labeled OH-. The midpoint of the scale is pH...
For Brønsted acids, acidity is the tendency of acompoundto act as an H+donor. The acidity of a Brønsted acid can be quantitatively expressed by theaciddissociation constantof the compound inwateror some other specifiedmedium. The most familiar quantitative measure of acidity is thepH scale....
value) which indicates the sweetness of sake, and theseimaibuai(rice polishing). Very rarely will you find the acidity on the label, and as a rule of thumb, sakes over 1.5 on the acidity scale is considered high in acidity. Most sakes, however, clock in around 1.3 on this scale. ...