Excess Volume and Viscosity of Propionic Acid in Methanol, Ethanol, 1-propanol and 1-butanol

Subha, M. C. S.; Rao, K. Chowdoji; Narayanaswamy, G.; Rao, S. Brahmaji

doi:10.1080/00319108808078593

Cited by 13 publications

(6 citation statements)

References 4 publications

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“…For propanoic acid + 1-butanol system at x 1 =0.5 the excess molar volume is similar with literature data (-0.421 cm 3 •mol -1 ). 13 For propanoic acid + 1-pentanol system the excess molar volume decrease very little compared to propanoic acid + 1-butanol system. This means that the length of the chain no longer significantly influences the strength of the hydrogen bond.…”

Section: Resultsmentioning

confidence: 96%

“…For the binary mixture propanoic acid + 1propanol the excess molar volume obtained in this work is -0.733 cm 3 •mol -1 at 25 °C at x 1 =0.5, a value higher than that obtained in the literature -0.469 cm 3 •mol -1 at 30 °C but for a mixture of propanoic acid and 1-propanol dried and distilled. 13 In the case of propanoic acid + 2-propanol system, at the molar fraction 0.5 of 2-propanol, the strength of hydrogen bonds, which is formed between one mole of alcohol and one mole of acid, is the strongest. At values of the mole fractions of 2-propanol less and greater than 0.5, the strength of hydrogen bonds decreases, because the molar ratio between alcohol and acid changes.…”

Section: Resultsmentioning

confidence: 99%

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Excess molar volumes and partial molar volumes for binary mixtures propanoic acid with 1-propanol, 2-propanol, 1-butanol and 1-pentanol

Georgescu¹,

Meltzer²,

Pincu³

2020

Rev.Roum.Chim.

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The densities of binary acid-alcohol mixtures were determined experimentally by the pycnometer method for four binary systems: propanoic acid with 1-propanol, 2-propanol, 1-butanol and 1-pentanol at 298,15K. From the experimental data, excess molar volumes and partial molar volumes were calculated. The partial molar volumes were revealed by the intersection method and the excess molar volumes were fitted using the polynomial equations of Redlich-Kister type. The results indicate the presence of attractive forces between the components and the decrease of the hydrogen bond strength as the length of the alcohol chain increases.

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Excess molar volumes and partial molar volumes for binary mixtures propanoic acid with 1-propanol, 2-propanol, 1-butanol and 1-pentanol

Georgescu¹,

Meltzer²,

Pincu³

2020

Rev.Roum.Chim.

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“…The positive values of excess Gibbs energy of activation of viscous flow for the binary systems investigated suggest the intermolecular complexation through H-bonding between isomeric butanols and 3-chloroaniline molecules. This interaction can be considered as the H-bond formation between the isomeric butanols as Lewis acids and the 3-chloroaniline as Lewis base [25,26]. Thus, the values of excess viscosity and excess Gibbs energy of activation of viscous flow are dependent on the position of the -OH group in the alcohol molecule, indicating a different extent of molecular interactions in isomeric butanols.…”

Section: Resultsmentioning

confidence: 99%

Studies of physical properties on molecular interactions in binary liquid mixtures of 3-chloroaniline with isomeric butanols at different temperatures

Rahul

Sankar

Chand

et al. 2015

Journal of Molecular Liquids

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“…After every 2 days of incubation, small aliquots have been withdrawn aseptically to know the growth and pH of the media. The soluble phosphate concentration in the supernatant was estimated by the vanado molybdophosphoric yellow color method (Subha et al, 1988).…”

Section: Screening and Estimation Of Phosphate Solubilizationmentioning

confidence: 99%

Evaluation of Plant Growth-Promoting and Salinity Ameliorating Potential of Halophilic Bacteria Isolated From Saline Soil

et al. 2022

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Among the biotic and abiotic stress affecting the physical, chemical, and biological properties of soil, salinity is a major threat that leads to the desertification of cultivable land throughout the world. The existence of diverse and versatile microbial populations inhabiting the nutrient-rich soil and varied soil conditions affects the soil dynamism. A normal soil constitutes 600 million bacteria belonging to about 20,000 species, which is reduced to 1 million with 5,000–8,000 species in stress conditions. Plant growth-promoting rhizobacteria (PGPR) are in symbiotic association with the plant system, which helps in combating the abiotic stress and increases the overall productivity and yield. These microorganisms are actively associated with varied cellular communication processes through quorum sensing and secondary metabolites such as the production of Indole-3-acetic acid (IAA), exopolysaccharide (EPS) siderophore, ammonia, ACC deaminase, and solubilization of phosphate. The present study focused on the isolation, identification, and characterization of the microorganisms isolated from the seacoast of Dandi, Navsari. Twelve isolates exhibited PGP traits at a high salt concentration of 15–20%. AD9 isolate identified as Bacillus halotolerans showed a higher ammonia production (88 ± 1.73 μg/mL) and phosphate solubilization (86 ± 3.06 μg/mL) at 15% salt concentration, while AD32* (Bacillus sp. clone ADCNO) gave 42.67 ±1.20 μg/mL IAA production at 20% salt concentration. AD2 (Streptomyces sp. clone ADCNB) and AD26 (Achromobacter sp. clone ADCNI) showed ACC deaminase activity of 0.61 ± 0.12 and 0.60 ± 0.04 nM α-ketobutyrate/mg protein/h, respectively. AD32 (Bacillus sp. clone ADCNL) gave a high siderophore activity of 65.40 ± 1.65%. These isolates produced salinity ameliorating traits, total antioxidant activities, and antioxidant enzymes viz. superoxide dismutase (SOD), Glutathione oxidase (GSH), and catalase (CAT). Inoculation of the multipotent isolate that produced PGP traits and salinity ameliorating metabolites promoted the plant growth and development in rice under salinity stress conditions. These results in 50% more root length, 25.00% more plant dry weight, and 41% more tillers compared to its control.

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Excess Volume and Viscosity of Propionic Acid in Methanol, Ethanol, 1-propanol and 1-butanol

Cited by 13 publications

References 4 publications

Excess molar volumes and partial molar volumes for binary mixtures propanoic acid with 1-propanol, 2-propanol, 1-butanol and 1-pentanol

Excess molar volumes and partial molar volumes for binary mixtures propanoic acid with 1-propanol, 2-propanol, 1-butanol and 1-pentanol

Studies of physical properties on molecular interactions in binary liquid mixtures of 3-chloroaniline with isomeric butanols at different temperatures

Evaluation of Plant Growth-Promoting and Salinity Ameliorating Potential of Halophilic Bacteria Isolated From Saline Soil

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