Density, Viscosity, Refractive Index, Speed of Sound, Molar Volume, Isobaric Thermal Compressibility, Excess Gibbs Activation for Fluid Flow, and Isentropic Compressibility of Binary Mixtures of Methanol with Anisole and with Toluene at 298.15 K and 0.1 MPa

Slocumb, Hannah S.; Van Hecke, Gerald R.

doi:10.3390/liquids4020021

Open AccessArticle

Density, Viscosity, Refractive Index, Speed of Sound, Molar Volume, Isobaric Thermal Compressibility, Excess Gibbs Activation for Fluid Flow, and Isentropic Compressibility of Binary Mixtures of Methanol with Anisole and with Toluene at 298.15 K and 0.1 MPa

by

Hannah S. Slocumb

and

Gerald R. Van Hecke

^*

Department of Chemistry, Harvey Mudd College, Claremont, CA 91711, USA

^*

Author to whom correspondence should be addressed.

Liquids 2024, 4(2), 402-414; https://doi.org/10.3390/liquids4020021

Submission received: 27 December 2023 / Revised: 17 April 2024 / Accepted: 1 May 2024 / Published: 10 May 2024

(This article belongs to the Collection Feature Papers in Solutions and Liquid Mixtures Research)

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Abstract

Density, viscosity, refractive index, and ultrasonic velocity were measured for the pure materials anisole, methanol, and toluene, and for the binary mixtures: methanol—anisole and methanol—toluene. Excess molar volume V^E, isobaric thermal compressibility α, excess Gibbs activation energy for fluid flow ΔG^E*, and excess isentropic compressibility κ_S^E were calculated from the measured quantities. For both binary mixtures V^E and κ_S^E were <0 while Δn > 0 and ΔG^E* > 0 over the entire mole fraction composition range. Anisole mixtures exhibited more negative values for V^E and κ_S^E while more positive values were displayed for Δn and ΔG^E* compared to toluene mixtures. For Δη, negative values were observed at low alcohol concentrations but positive values at high alcohol concentrations for both systems.

Keywords: small molecule liquid mixtures; physical properties; molar volume; isentropic compressibility; refractive index

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MDPI and ACS Style

Slocumb, H.S.; Van Hecke, G.R. Density, Viscosity, Refractive Index, Speed of Sound, Molar Volume, Isobaric Thermal Compressibility, Excess Gibbs Activation for Fluid Flow, and Isentropic Compressibility of Binary Mixtures of Methanol with Anisole and with Toluene at 298.15 K and 0.1 MPa. Liquids 2024, 4, 402-414. https://doi.org/10.3390/liquids4020021

AMA Style

Slocumb HS, Van Hecke GR. Density, Viscosity, Refractive Index, Speed of Sound, Molar Volume, Isobaric Thermal Compressibility, Excess Gibbs Activation for Fluid Flow, and Isentropic Compressibility of Binary Mixtures of Methanol with Anisole and with Toluene at 298.15 K and 0.1 MPa. Liquids. 2024; 4(2):402-414. https://doi.org/10.3390/liquids4020021

Chicago/Turabian Style

Slocumb, Hannah S., and Gerald R. Van Hecke. 2024. "Density, Viscosity, Refractive Index, Speed of Sound, Molar Volume, Isobaric Thermal Compressibility, Excess Gibbs Activation for Fluid Flow, and Isentropic Compressibility of Binary Mixtures of Methanol with Anisole and with Toluene at 298.15 K and 0.1 MPa" Liquids 4, no. 2: 402-414. https://doi.org/10.3390/liquids4020021

APA Style

Slocumb, H. S., & Van Hecke, G. R. (2024). Density, Viscosity, Refractive Index, Speed of Sound, Molar Volume, Isobaric Thermal Compressibility, Excess Gibbs Activation for Fluid Flow, and Isentropic Compressibility of Binary Mixtures of Methanol with Anisole and with Toluene at 298.15 K and 0.1 MPa. Liquids, 4(2), 402-414. https://doi.org/10.3390/liquids4020021

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Density, Viscosity, Refractive Index, Speed of Sound, Molar Volume, Isobaric Thermal Compressibility, Excess Gibbs Activation for Fluid Flow, and Isentropic Compressibility of Binary Mixtures of Methanol with Anisole and with Toluene at 298.15 K and 0.1 MPa

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