- PII
- 10.31857/S0044453723010119-1
- DOI
- 10.31857/S0044453723010119
- Publication type
- Status
- Published
- Authors
- Volume/ Edition
- Volume 97 / Issue number 1
- Pages
- 81-88
- Abstract
- Values of kinematic viscosity and density are determined for water–acetone–methyl ethyl ketone solutions for the first time in the region of high contents of water and the 20–40°C range of temperatures. Results are used to calculate the molar kinematic viscosity (νm), the Gibbs energy of viscous flow activation (ΔG≠νΔ), and the entropy of viscous flow activation. The viscometric characteristics of this system are compared to those of water–ethanol–acetone, water–2-propanol–acetone, and water–2-butanol–acetone systems studied earlier. Dependences on the concentration of one organic component at a fixed content of a second are presented for different properties. The viscometric parameters of ternary solutions with methyl ethyl ketone, calculated based on size/molecular weight of the components (νm and ΔG≠νΔ), are close to those obtained for solutions with ethanol but notably higher for solutions with 2-propanol and 2-butanol. It is concluded that molecules participating in the formation of intermolecular hydrogen bonds as proton donors (alcohols) raises viscosity more than an increase in size/mass (methyl ethyl ketone). Different ways of calculating the entropy of viscous flow activation (ΔS≠νΔ) are compared on the basis of literature data. It is found that ΔS≠νΔ is higher than that of water in the studied range of concentrations of the ternary water–acetone–methyl ethyl ketone system, which is also typical of other aqueous solutions.
- Keywords
- тернарная система вязкость энергия Гиббса активации вязкого течения энтропия активации вязкого течения межмолекулярные водородные связи
- Date of publication
- 12.09.2025
- Year of publication
- 2025
- Number of purchasers
- 0
- Views
- 13
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