One of the most basic dicarboxylic acids is oxalic acid. The abbreviated formula for this compound is HOOC-COOH. It should be noted, however, that the acidity of this compound is much higher than that of acetic acid. Anhydrous oxalic acid has a molar mass of 90.03 grams per mole. This o...
Journal of Organic ChemistryK. B. Wiberg, "Substituent effects on the acidity of weak acids. 1. Bicyclo[2.2.2]octane-1-carboxylic acids and bicyclo[1.1.1]pentane-1-carboxylic acids," Journal of Organic Chemistry, vol. 67, no. 5, pp. 1613-1617, 2002....
No interaction between polar groups located on the acids and the polyenic chain of HBA seems to occur. The chemical shifts of all carbon atoms and also of the Schiff base nitrogen are linearly correlated with the acidity strength of the carboxylic acids....
In the presence of the organic component, correlations relating the acidity constants with properties of the media were also found. In particular, affinity distributions derived from potentiometric titration data were used to assess the solvent media for resolving dissociation constants of weak acids ...
Acidity constantWe applied the principle of feedback-based flow ratiometry, originally developed for continuous titrations, to the determination of acid dissociation constants ( K a). The titrant (NaOH) flow rate F B was varied in response to a control voltage V c from a controller, while ...
By varying acidity of poly(carboxylic acids), the hydrogel swelling and the corresponding values of pH for encapsulation/release of functional molecules could be tuned in a wide range from pH 5 to 10. In addition, the capsules are capable of entrapping macromolecules by "locking" the capsule ...
It is well known that acidity, pH, of a solution accelerates the hydrolysis of soluble amides. Here we describe the unexpected result that weak small organic acids at low concentrations hydrolyze a polyamide at rates approximately twice that of a water HCl solution of the same pH. The effect ...