ISSN:
1573-9171
Keywords:
acidity
;
indicator method
;
hydrochloric acid
;
ethanol
;
water
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The acidity functionsH 0 s of HCl solutions in EtOH-H2O solvents containing 1.09, 3.0, and 5.0% water have been measured at 25 and 40 °C by the indicator method. The concentration of HCl changes from 10−2 to 36m. Nitroanilines, for which a protonation mechanism is realized in the studied systems, were used as indicators. For each solvent,H 0 s is temperature independent atm HCl 〈 4, and acidity atm HCl 〉 4 mol L−1 increases more rapidly at 25 °C than at 40 °C. The acidity functions of aqueous and water-ethanol solutions of HCl were compared, and the concentrations of proton solvates of different compositions and their relative protonating ability were evaluated.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00703474
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