On the use of dimensionless parameters in acid-base theory: VI. The buffer capacities of equimolar binary mixtures of monovalent weak protolytes as compared to that of bivalent protolytes

1994 ◽  
Vol 15 (1) ◽  
pp. 580-583 ◽  
Author(s):  
Harry Rilbe
Keyword(s):  
Binary Mixtures ◽  
Acid Base ◽  
Dimensionless Parameters ◽  
Base Theory ◽  
Buffer Capacities

Acid-base properties of metals and glasses of Na2O.P2O5-xB2O3 system

1984 ◽  
Vol 49 (10) ◽  
pp. 2355-2362 ◽  
Author(s):  
Juraj Leško ◽  
Marie Dorušková ◽  
Jan Tržil
Keyword(s):  
Boron Oxide ◽  
A Priori ◽  
Optical Basicity ◽  
Galvanic Cell ◽  
Acid Base ◽  
Tetrahedral Configuration ◽  
Relative Basicity ◽  
Base Theory ◽  
Base Properties

Boron oxide in the Na2O.P2O5-x B2O3 system behaves as a Lux base. Its addition to Na2O.P2O5 brings about transformation of a Co(II) indicator from octahedral to tetrahedral configuration, increase in the optical basicity ΛPb(II), increase in the relative basicity of the melt as determined by means of a galvanic cell, and depolymerization reactions releasing PO43- ions. In the Na2O-B2O3 system free of P2O5, boron oxide behaves as a Lux acid. The amphoretic nature of B2O3 is explained in terms of Lux's acid-base theory extended in analogy with the protolysis theory. The theoretical optical basicity values do not indicate the amphoretic behaviour of B2O3 because in this approach boron oxide is a priori regarded as more acidic than Na2O.P2O5.

scholarly journals The combination curves, hydrogen ion regulating power and dissociation constants of gelatin

1931 ◽  
Vol 108 (756) ◽  
pp. 224-232 ◽  
Keyword(s):  
Amino Acids ◽  
Dissociation Constants ◽  
Hydrogen Ion ◽  
New Method ◽  
Equivalent Weight ◽  
Acid Base ◽  
Buffer Capacities ◽  
Alkaline Range ◽  
Undissociated Molecule

The existing titrations of gelatin with acid and alkali have been found to refer mainly to solutions containing approximately 1 per cent. of the dry material, while the few titrations in 0·1 per cent. solutions are not in agreement. A series of titrations with alkali at both concentrations of gelatin has been made with a view to deciding whether the combining weight is really affected by the concentration. From the collected data, the combining or equivalent weight has been calculated by a new method based on the theory of buffer mixtures, and incidentally, the buffer capacities at the different concentrations have been determined. The equivalent so found has been compared with those which have been deduced by other methods. The equivalents of the 1·0 per cent. and 0·1 per cent. solutions in the alkaline range have also been calculated by another method using constants, and found to differ from one another. The equivalents as acid and as base have been deduced in various ways from the combination curves and also from the cleavage products, and these acid/base ratios have been compared. Finally by treating gelatin as a simple ampholyte, apparent constants have been calculated both on the undissociated molecule or older and on the "amphoteric ion" or newer theory. Although gelatin is undoubtedly amphoteric in its nature, yet its curves of combination ( p H plotted against x = added acid or alkali) differ greatly from those of simple amino-acids such as glycine, as is easily seen by comparing the types which have been portrayed by Harris (1923, 1925, 1930).

Contemporary acid-base theory.

1948 ◽  
Vol 25 (10) ◽  
pp. 555 ◽  
Author(s):  
W. F. Luder
Keyword(s):  
Acid Base ◽  
Base Theory

The effect of interface electrostatic interaction based on acid-base theory on friction behavior

2017 ◽  
Vol 49 (8) ◽  
pp. 691-697
Author(s):  
Li Qiang ◽  
Zhongyue Cao ◽  
Jing Shi ◽  
Yan Zhou ◽  
Aimin Liang ◽  
...  
Keyword(s):  
Electrostatic Interaction ◽  
Acid Base ◽  
Friction Behavior ◽  
Base Theory
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