Heat capacity changes and standard partial molal heat capacities of aqueous solutions of some tetra-alkyl ammonium halides at 30°C and the effect on water structure

1969 ◽  
Vol 65 (0) ◽  
pp. 2333-2338 ◽  
Author(s):  
T. S. Sarma ◽  
R. K. Mohanty ◽  
J. C. Ahluwalia
Keyword(s):  
Heat Capacity ◽  
Aqueous Solutions ◽  
Water Structure ◽  
Heat Capacities ◽  
Ammonium Halides ◽  
Heat Capacity Changes ◽  
Partial Molal Heat Capacities ◽  
Alkyl Ammonium

Static Water Structure Detected by Heat Capacity Measurements on Aqueous Solutions of a Triple-Helical Polysaccharide Schizophyllan

2003 ◽  
Vol 4 (5) ◽  
pp. 1348-1356 ◽  
Author(s):  
Kazuto Yoshiba ◽  
Akio Teramoto ◽  
Naotake Nakamura ◽  
Kyo Kikuchi ◽  
Yuji Miyazaki ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Aqueous Solutions ◽  
Water Structure ◽  
Static Water ◽  
Heat Capacity Measurements

Protonation of azobenzene derivatives. I. Methyl orange and ortho-methyl orange

1973 ◽  
Vol 26 (5) ◽  
pp. 1005 ◽  
Author(s):  
PD Bolton ◽  
J Ellis ◽  
KA Fleming ◽  
IR Lantzke
Keyword(s):  
Heat Capacity ◽  
Methyl Orange ◽  
Aqueous Solutions ◽  
Standard Enthalpy ◽  
Acidity Constants ◽  
Temperature Range ◽  
Heat Capacity Changes ◽  
Azobenzene Derivatives

Thermodynamic acidity constants have been measured over the temperature range 5-50� for aqueous solutions of sodium 4?-dimethylaminoazobenzene- 4-sulphonate (methyl orange) and sodium 4?-dimethylaminoazobenzene-2- sulphonate (ortho-methyl orange). From these data values of the standard enthalpy, entropy, and heat capacity changes have been calculated for these compounds. These results are discussed in conjunction with previous spectrophotometric and other data with reference to the nature of the equilibrium systems involved in these protonation reactions. It is concluded that existing evidence does not allow an unequivocal assignment of the sites of protonation of these and related molecules.

Degrees of dissociation and hydration numbers of six tetra alkyl ammonium halides and nineteen 2:1 strong electrolytes in aqueous solutions at 25 °C

1989 ◽  
Vol 54 (5) ◽  
pp. 1227-1231 ◽  
Author(s):  
Rajalakshmi Heyrovská
Keyword(s):  
Aqueous Solutions ◽  
Osmotic Coefficient ◽  
Hydration Numbers ◽  
Nineteen 2 ◽  
Ionic Concentrations ◽  
Ammonium Halides ◽  
Strong Electrolytes ◽  
Alkyl Ammonium ◽  
First Time ◽  
Degrees Of Dissociation

The actual ionic concentrations and hydration numbers of some tetra alkyl ammonium halides and 2:1 strong electrolytes in aqueous solutions at 25 °C have been evaluated for the first time from the existing osmotic coefficient data.

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