Apparent molar volumes and compressibilities of tetrabutyl-ammonium bromide in organic solvents

Krakowiak, Joanna

doi:10.1016/j.jct.2011.01.005

Cited by 42 publications

(6 citation statements)

References 55 publications

(69 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is observed that apparent molar volume decreases with concentration for water and methanol whereas for ethanol, 1-propanol and 1-butanol, values increase with concentration. The values are highest for 1-butanol, which is in agreement with that of other workers [58]. The values of apparent molar volume depend on type of salt, size of ions etc.…”

Section: Comparison Of Figures 5 [A] and [B]supporting

confidence: 92%

“…The values of apparent molar volume depend on type of salt, size of ions etc. In the present study, values of apparent molar volume are positive and large which is due to large organic ion with large intrinsic volume [58]. Further, large apparent molar volume is attributed to strong attractive interactions due to hydrogen bonding [59].…”

Section: Comparison Of Figures 5 [A] and [B]supporting

confidence: 47%

See 1 more Smart Citation

Volumetric behaviour of tetra-n-butyl ammonium bromide in various solvents at different temperatures

Baluja

Alnayab

2019

Rev. Colomb. Cienc. Quím. Farm.

View full text Add to dashboard Cite

Measurement of ultrasonic velocity, density and viscosity of solutions of Tetra Butyl Ammonium Bromide have been carried outin different solvents (water, methanol, ethanol, 1-propanol and 1-butanol) as functions of concentration (1 to 0.1 M) at different temperatures (298.15 K to 318.15 K). Using these experimental data, various acoustical and apparent parameters such as acoustical impedance, intermolecular free length, adiabatic compressibility, molar compressibility, Van der Waals constant, relaxation strength, apparent molar isentropic compressibility, apparent molar volume have been evaluated. Further, some thermodynamic parameters such as Gibbs free energy of activation, enthalpy and entropy of activation have been evaluated. All these parameters have been evaluated to understand type of interactions present in studied solutions.

show abstract

Section: Comparison Of Figures 5 [A] and [B]supporting

confidence: 92%

Section: Comparison Of Figures 5 [A] and [B]supporting

confidence: 47%

Volumetric behaviour of tetra-n-butyl ammonium bromide in various solvents at different temperatures

Baluja

Alnayab

2019

Rev. Colomb. Cienc. Quím. Farm.

View full text Add to dashboard Cite

show abstract

“…Therefore, the vibrant portrayal of monomer arrangement changes, and interactions of levofloxacin with a surfactant and solvent are expressed quantitatively by partial molar volume values. On close perusal of data, in the preaggregation region, the positive values of

V_{ϕ}^{o}

supremacy of type 2 interactions were found (Krakowiak, ). With a rise in [levofloxacin], the

V_{ϕ}^{o}

values decrease due to the entrapment of drug in the aggregated core of surfactant, making a negative contribution.…”

Section: Resultsmentioning

confidence: 91%

Modulation in Aggregation Behavior of Cationic Surfactant in Presence of Fluoroquinolone Drug: A Physicochemical Approach

Pathania

Chauhan

2020

J Surfact & Detergents

View full text Add to dashboard Cite

Measurements of density, speed of sound, conductivity, and fluorescence spectroscopy have been carried out to study the interactions between cationic surfactant cetyltrimethylammonium bromide in an aqueous solution of the fluoroquinolone drug at different concentrations and temperatures. Volumetric and compressibility parameters, such as apparent molar volumes (V φ ), isentropic compressibility (κ s ), and apparent molar isentropic compressibility (κ φ, s ), have been obtained from density and speed of sound. The critical micelle concentration (CMC) of cetyltrimethylammonium bromide (CTAB) is found to decrease with an increase in [antibiotic drug] and increase with an increase in temperature, accounting for the fact that hydrophilic dehydration plays a decisive role for micellization to take place. The various thermodynamic parameters indicate the spontaneity of micellization in the presence of drug moiety. The CMC values have been calculated using pyrene as a fluorescent probe at room temperature, and a good qualitative correlation is found to exist well with the CMC values determined using speed of sound and conductivity measurements.

show abstract

“…The apparent molar volume of the salts depends on their concentration due to the ion-ion interactions. The extrapolation of the experimental V U values to infinite dilution to obtain V 0 U was based on the abbreviated form of the Pitzer equation for 1:1 electrolyte [18][19][20]:…”

Section: Apparent Molar Volumementioning

confidence: 99%

Apparent molar volumes and compressibilities of electrolytes and ions in γ-butyrolactone

Krakowiak

Wawer

Farmas

2012

The Journal of Chemical Thermodynamics

Self Cite

View full text Add to dashboard Cite

Apparent molar volumes and compressibilities of tetrabutyl-ammonium bromide in organic solvents

Cited by 42 publications

References 55 publications

Volumetric behaviour of tetra-n-butyl ammonium bromide in various solvents at different temperatures

Volumetric behaviour of tetra-n-butyl ammonium bromide in various solvents at different temperatures

Modulation in Aggregation Behavior of Cationic Surfactant in Presence of Fluoroquinolone Drug: A Physicochemical Approach

Apparent molar volumes and compressibilities of electrolytes and ions in γ-butyrolactone

Contact Info

Product

Resources

About