To gain more information about the effect of solvent on ␣-amino acids, the stoichiometric protonation constants of 10 ␣-amino acids (glycine, DL-alanine, DL-valine, L-leucine, L-isoleucine, DL-phenylalanine, Lserine, L-threonine, L-asparagine, and L-glutamine) in different dioxan-water mixtures have
Evaluation of acidity constants in dioxane—water mixtures by spectrophotometric and potentiometric pH titrations
✍ Scribed by A.Gustavo Gonzalez; F. Pablos
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 459 KB
- Volume
- 251
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
Autoprotolysis
constants and correction factors for a glass electrode in lo-508 (v/v) dioxane-water mixtures were calculated by using a procedure based on the titration of a strong acid with a strong base in the studied media. The correction factors were obtained at each titration point and therefore they cover the whole pH scale. The use of these parameters for evaluating acidity constants in dioxane-water mixtures by potentiometric and spectrophotometric methods is discussed.
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