Conductance, apparent molar volume and compressibility studies of cetyltrimethylammonium bromide in aqueous solution of leucine

2012 ◽  
Vol 175 ◽  
pp. 103-110 ◽  
Author(s):  
S. Chauhan ◽  
Kundan Sharma ◽  
D.S. Rana ◽  
G. Kumar ◽  
Ahmad Umar
Keyword(s):  
Aqueous Solution ◽  
Molar Volume ◽  
Apparent Molar Volume ◽  
Cetyltrimethylammonium Bromide

scholarly journals Volumetric studies of alcohols in water and aqueous micelle solutions of cetyltrimethylammonium bromide

1970 ◽  
Vol 24 (2) ◽  
pp. 143-157 ◽  
Author(s):  
T Parvin ◽  
M Alauddin ◽  
M Rokonuzzaman
Keyword(s):  
Molar Volume ◽  
Apparent Molar Volume ◽  
Cetyltrimethylammonium Bromide ◽  
Surfactant Concentration ◽  
Partial Molar Volumes ◽  
Chemical Society ◽  
Volume Data ◽  
Palisade Layer ◽  
Molar Volumes ◽  
Partial Molar Expansibilities

The volumetric properties of 1-propanol, cyclohexanol and butoxyethanol in water and CTAB water mixtures have been studied. The apparent molar volumes of 1-propanol, cyclohexanol and butoxyethanol in water and in aqueous solutions of CTAB were determined from density data. The partial molar volumes of the alcohols in water and aqueous micelle solutions at infinite dilution, V20(mic) were obtained from apparent molar volume data and compared with the corresponding values. The standard partial molar expansibilities, E20(mic) of the solubilizates were evaluated from V20(mic) data at various temperatures. The volumetric studies of alcohols in CTAB micelles indicate that alcohols on the average are preferentially solubilized in the palisade layer of the micelle and increasing amount of each is transferred more deep into the palisade layer of the micelle with increasing surfactant concentration and temperature. The results of standard partial molar volume, V20 and standard partial molar expansibilities, E20 are reported and discussed. DOI: http://dx.doi.org/10.3329/jbcs.v24i2.9703 Journal of Bangladesh Chemical Society, Vol. 24(2), 143-157, 2011

scholarly journals Studies on Molecular Interactions of Some Electrolytes in Water by Volumetric and Viscometric Measurments at T= (303.15 to 323.15 K)

2011 ◽  
Vol 3 (2) ◽  
pp. 437-444 ◽  
Author(s):  
D. C. Kabiraz ◽  
T. K. Biswas ◽  
M. N. Islam ◽  
M. E. Huque
Keyword(s):  
Aqueous Solution ◽  
Molar Volume ◽  
Apparent Molar Volume ◽  
Potassium Nitrate ◽  
Magnesium Nitrate ◽  
Viscosity Data ◽  
Structural Effects ◽  
Density Data ◽  
Solvent Interactions ◽  
Volume Viscosity

The viscosities and densities of potassium chloride, potassium nitrate, magnesium chloride, and magnesium nitrate have been measured at 303.15, 308.15, 313.15, 318.15 and 323.15 K in aqueous solution. The viscosity data were analyzed by using Jones–Dole equation. The values of apparent molar volume, limiting apparent molar volume have been evaluated from the density data. The results were interpreted in the light of ion–ion and ion–solvent interactions and of structural effects of the solutes in solution.Keywords: Density; Apparent molar volume; Viscosity; Jones–Dole equation.© 2011 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.doi:10.3329/jsr.v2i2.6288                J. Sci. Res. 3 (2), 437-444 (2011)

scholarly journals Apparent molar volumes of sodium arsenate aqueous solution from 283.15 K to 363.15 K at ambient pressure: an experimental and thermodynamic modeling study

2020 ◽  
Vol 92 (10) ◽  
pp. 1673-1682
Author(s):  
Wanjing Cui ◽  
Hongfang Hou ◽  
Jiaojiao Chen ◽  
Yafei Guo ◽  
Lingzong Meng ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Thermal Expansion ◽  
Molar Volume ◽  
Thermal Expansion Coefficient ◽  
Expansion Coefficient ◽  
Apparent Molar Volume ◽  
Ambient Pressure ◽  
Apparent Molar Volumes ◽  
Sodium Arsenate ◽  
Molar Volumes

AbstractDensities of the sodium arsenate aqueous solution with the molality varied from (0.04165 to 0.37306) mol · kg−1 were determined experimentally at temperature intervals of 5 K from 283.15 K to 363.15 K and ambient pressure using a precise Anton Paar Digital vibrating-tube densimeter. The apparent molar volumes (Vϕ), thermal expansion coefficient (α) and partial molar volume $({\bar V_{\rm{B}}})$ were obtained based on the results of density measurement. The 3D diagram of apparent molar volume against temperature and molality as well as the diagram of thermal expansion coefficient and partial molar volume against molality were plotted, respectively. On the basis of the Pitzer ion-interaction equation of apparent molar volume model, the Pitzer single-salt parameters ($(\beta _{{\rm{M,X}}}^{(0)v},\beta _{{\rm{M,X}}}^{(1)v},{\rm{ }}\beta _{{\rm{M,X}}}^{(2)v}{\rm{ and }}C_{{\rm{M,X}}}^v,MX = N{a_3}As{O_4})$ and their temperature-dependent correlation F(i, p, T) = a1 + a2ln(T/298.15) + a3(T – 298.15) + a4/(620 – T) + a5/(T – 227) (where T is temperature in Kelvin, ai is the correlation coefficient) for Na3AsO4 were obtained on account of the least-squares method. Predictive apparent molar volumes agree well with the experimental values, and those results indicate that the single-salt parameters and their relational coefficients of temperature-dependence for Na3AsO4 obtained are reliable.

scholarly journals Studies on Volumetric and Viscometric Properties of L-Glutamic Acid in Aqueous Solution of Glucose over a Range of Temperatures (298K to 323K)

2020 ◽  
Vol 9 (4) ◽  
pp. 1547-1561
Keyword(s):  
Aqueous Solution ◽  
Glutamic Acid ◽  
Viscous Flow ◽  
Molar Volume ◽  
Mass Fraction ◽  
Apparent Molar Volume ◽  
Hydration Number ◽  
Free Energies ◽  
Solvent Interactions ◽  
Different Temperatures

In this work, volumetric and viscometric properties of L-glutamic acid in water and aqueous glucose solutions (5%, 10%, 15%, and 20% of glucose, w/w in water) have been measured as a function of molal concentration (0.02 mol.kg-1 to 0.16 mol.kg-1) of L-glutamic acid at different temperatures T= (293.15, 303.15, 308.15, 313.15 and 323.15) K. By using experimental densities (ρ) and viscosities (η) data, apparent molar volume (φv), experimental slope (Sv), limiting apparent molar volume (φv0), limiting apparent molar volume transfer (Δφv0)tra, limiting apparent molar expansibilities (Eφ0), Hepler’s constant (δEφ0/δT)p, Falkenhagen coefficient A, and Jones-Dole coefficient B have been computed. Gibbs free energies of activation of viscous flow per mole of solvent (μ_1^(0#)) and per mole of solute 〖(μ〗_2^(0#)), hydration number (Hn) is also calculated. The results are discussed based on solute-solute and solute-solvent interactions in these systems. From the results, it is observed that there exists a structure making propensity of L-glutamic acid in water and in the different mass fraction of aqueous glucose solutions, which increases with the increase of glucose concentrations.

Influence of Surface Roughness on Cetyltrimethylammonium Bromide Adsorption from Aqueous Solution

Langmuir ◽  
2011 ◽  
Vol 27 (10) ◽  
pp. 6091-6098 ◽  
Author(s):  
Shuqing Wu ◽  
Liu Shi ◽  
Lucas B. Garfield ◽  
Rico F. Tabor ◽  
Alberto Striolo ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Surface Roughness ◽  
Cetyltrimethylammonium Bromide

Micellar catalysis of organic reactions. VIII. Kinetic studies of the hydrolysis of 2-acetyloxybenzoic acid (aspirin) in the presence of micelles

1982 ◽  
Vol 35 (7) ◽  
pp. 1357 ◽  
Author(s):  
TJ Broxton
Keyword(s):  
Aqueous Solution ◽  
Cetyltrimethylammonium Bromide ◽  
Cetylpyridinium Chloride ◽  
Kinetic Studies ◽  
Base Catalysis ◽  
Plateau Region ◽  
General Base ◽  
Mechanism Of Hydrolysis ◽  
Ph Range ◽  
Hydrolysis Of

The hydrolysis of 2-acetyloxybenzoic acid in the pH range 6-12 has been studied in the presence of micelles of cetyltrimethylammonium bromide (ctab) and cetylpyridinium chloride (cpc). In the plateau region (pH 6-8) the hydrolysis is inhibited by the presence of micelles, while in the region where the normal BAC2 hydrolysis (pH > 9) occurs the reaction is catalysed by micelles of ctab and cpc. The mechanism of hydrolysis in the plateau region is shown to involve general base catalysis by the adjacent ionized carboxy group both in the presence and absence of micelles. This reaction is inhibited in the presence of micelles because the substrate molecules are solubilized into the micelle and water is less available in this environment than in normal aqueous solution.

Sign in / Sign up

Export Citation Format

Share Document