Ion–solvent and ion–ion interactions of sodium molybdate and sodium tungstate in mixtures of ethane-1,2-diol and water at 298.15, 308.15 and 318.15 K

Pradhan, Prasanna; Sah, Radhey Shyam; Roy, Debadrita

doi:10.1016/j.molliq.2008.11.001

Cited by 13 publications

(8 citation statements)

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“…Using Laplace–Newton’s equation, the isentropic compressibility is expressed 26 where ρ is the density of the solution and c is the speed of sound. The K ϕ, S values are all negative, and with the increase in the temperature, the values become less negative, but with the molality of glycols, the negativity of K ϕ, S values increases.…”

Section: Resultsmentioning

confidence: 99%

Study of Thermodynamic and Acoustic Properties of Niacin in Aqueous Hexylene Glycol and Propylene Glycol at Different Temperatures

2020

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The densities and speed of sound for liquid mixtures containing vitamin B 3 (niacin) at 0.01, 0.03, and 0.05 mol·kg –1 concentrations in aqueous propylene glycol and hexylene glycol at the variation of temperatures from 293.15 to 308.15 K have been measured using an Anton Paar DSA 5000 M. From volumetric experimental data, apparent molar volume ( V ϕ ), partial molar volume ( V ϕ 0 ), and partial molar volume of transfer (Δ V ϕ 0 ) are calculated along with the apparent molar isentropic compression ( K ϕ, S ), partial molar isentropic compression ( K ϕ, S 0 ), and partial molar isentropic compression of transfer (Δ K ϕ 0 ) using experimental acoustic data. The positive volumetric data (i.e., apparent molar volume and partial molar volume) indicates strong solute–solvent interactions inside the mixture. Along with these values, the empirical constants a , b , and c with the pair and triplet coefficients ( V AB , V ABB , K AB , K ABB ) are also calculated.

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Section: Resultsmentioning

confidence: 99%

Study of Thermodynamic and Acoustic Properties of Niacin in Aqueous Hexylene Glycol and Propylene Glycol at Different Temperatures

2020

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“…From least-squares fitting, the intercept values K ϕ,S 0 , and the experimental slope S K * are mentioned with their standard errors in Table . With the niacin concentration, the K ϕ,S 0 values are detected to be less negative and increases with the temperature, thus signifying that the interactions are strong and attractive among the molecules of water and poly(ethylene glycol)s . The reduction of electrostriction and ejection of molecules of water to the bulk is observed, which is confirmed due to the negative values of K ϕ,S 0 .…”

Section: Results and Discussionmentioning

confidence: 70%

Volumetric and Ultrasonic Studies of Molecular Interactions of PEG 400 and PEG 4000 in Aqueous Niacin Solutions at Different Temperatures

2021

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At multiple temperatures, 288.15–318.15 K, the density and speed of sound values for PEGs of molecular weights 400 and 4000 in aqueous niacin solutions were measured at concentrations of 0.07, 0.08, and 0.09 mol·kg–1. Utilizing these experimental data, the apparent molar properties and partial molar properties were determined to analyze the interactions in aqueous niacin solutions with poly(ethylene glycol)s (400/4000). The volumetric parameters, such as apparent molar volume, V ϕ, partial molar volume, V ϕ 0, and partial molar volume of transfer, ΔV ϕ 0, are obtained using experimental density values, while the acoustic parameters, i.e., apparent molar isentropic compression, K ϕ,S, partial molar isentropic compression, K ϕ,S 0, and partial molar isentropic compression of transfer, ΔK ϕ,S 0, are determined with the speed of sound data. These positive volumetric apparent and partial molar properties suggest the presence of strong solute–solvent interactions. The partial molar expansibilities (E ϕ 0) along with their first derivative (∂E ϕ 0/∂T)P were calculated. Further, pair and triplet coefficients are obtained using partial molar isentropic compression and partial molar volume of the transfer, respectively.

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“…For poly(ethylene glycols) in aqueous d -Panthenol solution, the apparent molar isentropic compression is determined by the below equation where the density of the solvent, density of the solution, molar mass of the solute, molality of the solute, and isentropic compressibility of the pure solvent and the solution are symbolized as ρ, ρ 0 , M , m A , k s.0 , and k s , respectively. The below-mentioned Laplace–Newton’s formula is used to calculate the isentropic compressibility where c is the speed of sound. In Table , the negative values of apparent molar isentropic compression ( K ϕ,S ) are mentioned, where at a constant d -Panthenol concentration the negativity of K ϕ,S values decreases with the temperature but increases with the poly(ethylene glycol) molality, which is graphically illustrated in Figure .…”

Section: Results and Discussionmentioning

confidence: 99%

“…where the density of the solvent, density of the solution, molar mass of the solute, molality of the solute, and isentropic compressibility of the pure solvent and the solution are symbolized as ρ, ρ 0 , M, m A , k s.0 , and k s , respectively. The below-mentioned Laplace−Newton's formula 61 is used to calculate the isentropic compressibility…”

Section: Apparent Molar Isentropic Compressionmentioning

confidence: 99%

Measurement of the Density and Ultrasonic Speed of the Sound of Poly(ethylene glycols) (600 and 6000) in Aqueous Vitamin B₅ Solutions at Different Temperatures

et al. 2022

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The present study involves measurement of the density and ultrasonic speed of sound via Anton Paar DSA 5000 M for the binary mixture of water + poly(ethylene glycol) 600/poly(ethylene glycol) 6000 and ternary mixture of water + d-Panthenol + poly(ethylene glycol) 600/poly(ethylene glycol) 6000 covering a whole range of compositions (0.00, 0.02, 0.07, and 0.12 mol kg–1) at 0.01 MPa pressure from 288.15 to 318.15 K. The volumetric properties (apparent molar volume, partial molar volume, and partial molar volume of transfer) are evaluated from the density data; meanwhile, the speed of sound data is utilized to determine the acoustic properties (apparent molar isentropic compression, partial molar isentropic compression, and partial molar isentropic compression of transfer). This investigation is further extended by calculating the partial molar expansibility with its first derivative and pair-triplet interaction coefficients from these derived thermodynamic parameters. The obtained results from these calculated parameters are expressed as solute–solvent, ion–hydrophilic, hydrophilic–hydrophilic, and dipole–dipole interactions prevailing in the liquid sample.

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Ion–solvent and ion–ion interactions of sodium molybdate and sodium tungstate in mixtures of ethane-1,2-diol and water at 298.15, 308.15 and 318.15 K

Cited by 13 publications

References 20 publications

Study of Thermodynamic and Acoustic Properties of Niacin in Aqueous Hexylene Glycol and Propylene Glycol at Different Temperatures

Study of Thermodynamic and Acoustic Properties of Niacin in Aqueous Hexylene Glycol and Propylene Glycol at Different Temperatures

Volumetric and Ultrasonic Studies of Molecular Interactions of PEG 400 and PEG 4000 in Aqueous Niacin Solutions at Different Temperatures

Measurement of the Density and Ultrasonic Speed of the Sound of Poly(ethylene glycols) (600 and 6000) in Aqueous Vitamin B₅ Solutions at Different Temperatures

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Ion–solvent and ion–ion interactions of sodium molybdate and sodium tungstate in mixtures of ethane-1,2-diol and water at 298.15, 308.15 and 318.15 K

Cited by 13 publications

References 20 publications

Study of Thermodynamic and Acoustic Properties of Niacin in Aqueous Hexylene Glycol and Propylene Glycol at Different Temperatures

Study of Thermodynamic and Acoustic Properties of Niacin in Aqueous Hexylene Glycol and Propylene Glycol at Different Temperatures

Volumetric and Ultrasonic Studies of Molecular Interactions of PEG 400 and PEG 4000 in Aqueous Niacin Solutions at Different Temperatures

Measurement of the Density and Ultrasonic Speed of the Sound of Poly(ethylene glycols) (600 and 6000) in Aqueous Vitamin B5 Solutions at Different Temperatures

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Measurement of the Density and Ultrasonic Speed of the Sound of Poly(ethylene glycols) (600 and 6000) in Aqueous Vitamin B₅ Solutions at Different Temperatures