Determination of dissociation constants of weak acids by deconvolution of proton binding isotherms derived from potentiometric data

1996 ◽  
Vol 25 (9) ◽  
pp. 877-894 ◽  
Author(s):  
J. A. Schwarz ◽  
Cr. Contescu ◽  
V. T. Popa ◽  
A. Contescu ◽  
Y. Lin
Keyword(s):  
Dissociation Constants ◽  
Weak Acids ◽  
Proton Binding ◽  
Binding Isotherms ◽  
Potentiometric Data

Determination of acids and their strength in isobutyl methyl ketone

1982 ◽  
Vol 47 (4) ◽  
pp. 1203-1215 ◽  
Author(s):  
Vladimír Dostál ◽  
Zdeněk Stránský ◽  
Jan Slouka
Keyword(s):  
Potentiometric Titration ◽  
Malonic Acid ◽  
Methyl Ketone ◽  
Dissociation Constants ◽  
Weak Acids ◽  
Titration Curves ◽  
Derivatives Of

The dissociation constants of nitrophenoxazines in isobutyl methyl ketone (MIBK) were determined and correlated with the HNP values in acetone. Of the derivatives studied, the strongest acid is 1,3,7-trinitrophenoxazine (pK = 19.8), the weakest, 1-nitrophenoxazine (pK > 26). The compounds have no tendency to homo- or heteroconjugation, and were used as indicators in determination of weak acids in MIBK. Some derivatives of malonic acid and of 1,2,4-triazine as well as the intermediates used in their synthesis were determined; their HNP and pK values were established. The shape of the potentiometric titration curves can be of assistance in solving some structure problems.

Determination of dissociation constants of weak acids by feedback-based flow ratiometry

2003 ◽  
Vol 499 (1-2) ◽  
pp. 199-204 ◽  
Author(s):  
Hideji Tanaka ◽  
Kiriko Aritsuka ◽  
Takahiro Tachibana ◽  
Hiroshi Chuman ◽  
Purnendu K. Dasgupta
Keyword(s):  
Dissociation Constants ◽  
Weak Acids

Determination of acidic dissociation constants of L-phenylalanyl-glycine and L-alanyl-L-alanine in water using ab initio methods

2014 ◽  
Vol 2 (42) ◽  
pp. 263-263
Author(s):  
Farhoush Kiani ◽  
Mahmoud Tajbakhsh ◽  
Fereydoon Ashrafi ◽  
Nesa Shafiei ◽  
Azar Bahadori ◽  
...  
Keyword(s):  
Ab Initio ◽  
Dissociation Constants ◽  
Ab Initio Methods ◽  
Acidic Dissociation

Development of a Robust Protocol for the Determination of Weak Acids’ pKa Values in DMSO

2020 ◽  
Vol 85 (16) ◽  
pp. 10951-10957
Author(s):  
Sebastian T. Jung ◽  
Joachim Podlech
Keyword(s):  
Weak Acids ◽  
Pka Values ◽  
Robust Protocol
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