Acid-base equilibriums in methanol, acetonitrile, and dimethyl sulfoxide in acids and salts of oxalic acid and homologs, fumaric and o-phthalic acids. Transfer activity coefficients of acids and ions

1975 ◽  
Vol 79 (12) ◽  
pp. 1176-1182 ◽  
Author(s):  
M. K. Chantooni ◽  
I. M. Kolthoff
Keyword(s):  
Oxalic Acid ◽  
Dimethyl Sulfoxide ◽  
Activity Coefficients ◽  
Acid Base ◽  
Transfer Activity ◽  
Phthalic Acids

Transfer activity coefficients between some dipolar aprotic solvents and alcohols of salts composed of various anions and potassium complexed with Bis(4,4'(5')-t-butylbenzo)-18-crown-6

1983 ◽  
Vol 36 (9) ◽  
pp. 1753 ◽  
Author(s):  
Jr MK Chantooni ◽  
IM Kolthoff ◽  
G Roland
Keyword(s):  
Dimethyl Sulfoxide ◽  
Stability Constants ◽  
Propylene Carbonate ◽  
Activity Coefficients ◽  
Isopropyl Alcohol ◽  
The Other ◽  
Aprotic Solvents ◽  
Transfer Activity ◽  
Dipolar Aprotic Solvents

Stability constants, Kf(LK+) and Kf(LKX) = [LKX]/[L][KX] at 25� in the dipolar aprotic solvents acetone (Me2CO), acetonitrile (MeCN), propylene carbonate (pc), N,N-dimethylformamide (HCONMe2), dimethyl sulfoxide (Me2SO), as well as in the alcohols, methanol (MeOH), isopropyl alcohol (Pr1OH), and butan -1-ol (BuOH) have been determined, L being bis(4,4'(5')-t-buty1benzo)-18- crown-6 (di(BuBo)-18-cr-6). This crown is considerably more lipophylic than is dibenzo-18-crown-6. Values of Kf(LKX) have been found from values of Kf(LK+), KA(KX) and KA(LKX). Transfer activity coefficients, Me2COγS, have been calculated (based on the Parker proposal that γ(Ph4As+) = γ(BPh4-) between acetone and the various solvents used of K+, Br-, ClO4-, P1- (picrate), LK+, KX, and LKX. It is found that K+ is more strongly solvated in Me2CO than in the other aprotic solvents of low donicity. The reverse is true between Me2CO and HCONMe2 or Me2SO (even after correcting for the Born effect).

scholarly journals THE ACTIVITY COEFFICIENTS OF CERTAIN ACID-BASE INDICATORS

1929 ◽  
Vol 82 (1) ◽  
pp. 197-246 ◽  
Author(s):  
Julius Sendroy ◽  
A. Baird Hastings
Keyword(s):  
Activity Coefficients ◽  
Acid Base

A potentiometric study of (acid+base) equilibria in substituted 4-nitropyridine N-oxide systems in methanol and dimethyl sulfoxide

2007 ◽  
Vol 39 (2) ◽  
pp. 309-315 ◽  
Author(s):  
Łukasz Gurzyński ◽  
Aniela Puszko ◽  
Mariusz Makowski ◽  
Lech Chmurzyński
Keyword(s):  
Dimethyl Sulfoxide ◽  
Acid Base ◽  
Oxide Systems ◽  
Potentiometric Study

Propriétés de solvation des solutions concentrées en acide phosphorique

1986 ◽  
Vol 64 (3) ◽  
pp. 608-614 ◽  
Author(s):  
C. Louis ◽  
J. Bessière
Keyword(s):  
Activity Coefficients ◽  
Acid Solutions ◽  
Reduction Reactions ◽  
Basic Properties ◽  
Transfer Activity ◽  
Oxidation Reduction ◽  
Normal Potential ◽  
Oxygen Atoms

Solvation properties of ions inH2O–H3PO4 media (1–14 M) are characterized with their solvation transfer activity coefficients f. These are calculated from normal potential or solubility values, and indicate an increasing solvation for anions and decreasing solvation for cations in concentrated acid solutions. For each species, the range depends on its number of charges, on the existence of oxygen atoms in its structure, and on its basic properties. The consequences of variation of solvation on oxidation–reduction reactions and solubility properties are studied.

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