Studies on the importance of nature of substituent on the thermodynamic and transport properties of liquid mixtures at various temperatures

Rao, P. Venkateswara; Gowrisankar, M.; Venkatramana, L.; Krishna, T. Srinivasa; Ravindhranath, K.

doi:10.1016/j.jct.2016.05.015

Cited by 57 publications

(8 citation statements)

References 46 publications

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“…The interpretations of excess partial molar properties (trueV¯m,1normalE,trueV¯m,2normalE,trueK¯s,m,1normalEandtrueK¯s,m,2normalE) and excess partial molar properties at infinite dilution (trueV¯m,1°E, trueV¯m,2°EtrueK¯s,m,1°E and trueK¯s,m,2°E) of components have previously been described (Venkateswara rao et al ., 2016).…”

Section: Resultsmentioning

confidence: 91%

“…For all binary systems at different compositions, the experimental densities, sound speeds and viscosities are used to calculate the excess/deviation functions ( V E , K s E , ∆ η and ∆ G *E ), which have been previously published (Venkateswara rao et al ., 2016). It has previously been described (Benson–Kiyohara methodology) (Benson and Kiyohara, 1979) how to calculate K s E .…”

Section: Resultsmentioning

confidence: 99%

“…There have been several descriptions of the methodologies and measuring procedures (Venkateswara Rao, Gowrisankar, Venkatramana, Srinivasa Krishna, & Ravindhranath, 2016).…”

Section: Apparatusmentioning

confidence: 99%

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Thermodynamic properties of ketone with 2-methyl-1-butanol/2-ethyl-1-butanol at various temperatures

Lakshmi

Kiran

Gowrisankar

et al. 2022

AGJSR

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PurposeThe paper aims to throw light on the interactions taking place between the different chemical compositions at various temperatures. P-methylacetophenone is a polar dissolvable, which is positively related by dipole–dipole co-operations and is exceptionally compelling a direct result of the shortfall of any critical primary impacts because of the absence of hydrogen bonds; hence, it might work an enormous dipole moment (μ = 3.62 D). Alcohols additionally assume a significant part in industries and research facilities as reagents and pull in incredible consideration as helpful solvents in the green innovation. They are utilized as pressure-driven liquids in drugs, beauty care products, aromas, paints removers, flavors, dye stuffs and as a germ-free specialist.Design/methodology/approachMixtures were prepared by mass in airtight ground stopper bottles. The mass measurements were performed on a digital electronic balance (Mettler Toledo AB135, Switzerland) with an uncertainty of ±0.0001 g. The uncertainty in mole fraction was thus estimated to be less than ±0.0001. The densities of pure liquids and their mixtures were determined using a density meter (DDH-2911, Rudolph Research Analytical). The instrument was calibrated frequently using deionized doubly distilled water and dry air. The estimated uncertainty associated with density measurements is ±0.0003 g.cm−3. Viscosities of the pure liquids and their mixtures were determined by using Ostwald’s viscometer. The viscometer was calibrated at each required temperature using doubly distilled water. The viscometer was cleaned, dried and is filled with the sample liquid in a bulb having capacity of 10 ml. The viscometer was then kept in a transparent walled water bath with a thermal stability of ±0.01K for about 20 min to obtain thermal equilibrium. An electronic digital stop watch with an uncertainty of ±0.01 s was used for the flow time measurements for each sample at least four readings were taken and then the average of these was taken.FindingsNegative values of excess molar volume, excess isentropic compressibility and positive values of deviation in viscosity including excess Gibbs energy of activation of viscous flow at different temperatures (303.15, 308.15 and 313.15 K) may be attribution to the specific intermolecular interactions through the hetero-association interaction between the components of the mixtures, resulting in the formation of associated complexes through hydrogen bond interactions.Originality/valueThe excess molar volume (VE) values were analyzed with the Prigogine–Flory–Patterson theory, which demonstrated that the free volume contribution is the one of the factors influencing negative values of excess molar quantities. The Jouyban–Acree model was used to correlate the experimental values of density, speed of sound and viscosity.

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Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 99%

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Thermodynamic properties of ketone with 2-methyl-1-butanol/2-ethyl-1-butanol at various temperatures

Lakshmi

Kiran

Gowrisankar

et al. 2022

AGJSR

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“…The experimental density, speed of sound and viscosity data and their excess/deviation values for the The standard uncertainties are (x 1 ) = 1 × 10 −4 , u (ρ) ± 0.2×10 −4 g cm −3 , u (u) = 0.5%, u (η) = 1.03%, u (T) = 0.01 K for density, viscosity and speed of sound, u (T) = 0.02 K for viscosity and u (p) = 1 kPa a 298. 15 All the excess/deviation values of these parameters may be explained qualitatively in terms of 1. molecular interactions between like/unlike molecules and the difference in size and shape of the unlike components 2. Possible H-bond interaction between 2-ethyl-1-hexanol and various functional groups in the mixtures having 2-ethyl-1-hexanol as a proton donor 3.…”

Section: Resultsmentioning

confidence: 98%

“…The details of the density, speed of sound and viscosity methods and their measurement techniques were described elsewhere [15]. The uncertainty of density measurement for liquid mixtures is ± 0.2 × 10 −4 g cm 3 .…”

Section: Apparatus and Proceduresmentioning

confidence: 99%

Binary mixtures of 2-ethyl-1-hexanol with various functional groups (benzyl chloride, 3-methylaniline, 3-methoxyaniline and 2,6-dimethylcyclohexanone)

et al. 2020

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In the binary mixtures of 2-ethyl-1-hexanol with various functional groups (benzyl chloride, 3-methyl aniline, 3-methoxy aniline and 2,6-dimethyl cyclohexanone) densities, speeds of sound and viscosities including those of pure liquids were measured over the entire composition range at different temperatures (303.15, 308.15 and 313.15) K and atmospheric pressure 0.1 MPa. Using this experimentally determined data, the excess/deviation parameters (molar volume, isentropic compressibility and deviation in viscosity) partial molar volumes, partial molar isentropic compressibilities of these components at infinite dilution were calculated. The results are discussed in terms of intermolecular forces between different component molecules in the binary mixture are more than the average intermolecular forces existing between the similar molecules of pure components.

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Studies of Associated Solutions: Evaluation of Thermodynamic Parameters of Blends of 2-Methylaniline and Substituted Ethanols at Various Temperatures

Raghavendra

Gowrisankar

Krishna³

et al. 2018

J Solution Chem

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Studies on the importance of nature of substituent on the thermodynamic and transport properties of liquid mixtures at various temperatures

Cited by 57 publications

References 46 publications

Thermodynamic properties of ketone with 2-methyl-1-butanol/2-ethyl-1-butanol at various temperatures

Thermodynamic properties of ketone with 2-methyl-1-butanol/2-ethyl-1-butanol at various temperatures

Binary mixtures of 2-ethyl-1-hexanol with various functional groups (benzyl chloride, 3-methylaniline, 3-methoxyaniline and 2,6-dimethylcyclohexanone)

Studies of Associated Solutions: Evaluation of Thermodynamic Parameters of Blends of 2-Methylaniline and Substituted Ethanols at Various Temperatures

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