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Sugden defined in 1924 parachor as (surface tension in mN/m)^(1/4).(molar volume in cm^3/mol). This definition is used up to now and it results in usual parachor values of the order of magnitude of 100. Therefore, parachor is a derived quantity like any other and its unit is (mN/m)^(1/4).cm^3/mol. This unit is so bizare in the light of usual experience that most authors do not dare give it in their texts and prefer not to give any unit. Owing to this fact, there has arisen the mistaken impression that the parachor has no unit.
S. Sugden, J. Chem. Soc. Trans. 125 (1924) 1167--1177, from contemporary literature see
M. Souckova et al. J. Chem. Thermodynamics 83 (2015) 52-60
Wiki User
∙ 9y ago
Wiki User
∙ 11y agoparachor has no unit because its formula values cancelled out with each other.
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This unit is called volts.
What is the parachor value of toluene?
The parachor value of toluene is 8.73 cal/cm³. This parameter reflects the cohesive forces present in the liquid and can be used to estimate the intermolecular interactions within a compound.
What is parachore and its effect in chemistry?
Parachor is a measure of molecular size that accounts for both volume and surface area. It describes the ability of a molecule to spread on a surface or dissolve in a solvent. In chemistry, parachor is used to predict the physical properties of substances such as solubility, intermolecular interactions, and surface tension.
What is parachor value of chloroform?
The parachor value of chloroform is approximately 79 cal/cm³. Parachor is a measure of the ability of a substance to spread over the surface of another substance. In the case of chloroform, its parachor value reflects its molecular structure and interactions with other substances.
What is parachor and its uses?
Parachor is a dimensionless quantity used in physical chemistry to compare the relative solubility of different solvents for a given solute. It is calculated as the ratio of surface tension to density raised to the power of 0.5. Parachor helps in predicting the ability of a solvent to dissolve a particular solute based on their molecular interactions.
What is parachor value of acetic acid?
The parachor value of acetic acid is approximately 11.92 cal/cm^3. Parachor is a measure of molecular surface tension and is used to compare the cohesive properties of different substances.
What are the factors that affecting the property of PARACHOR?
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Difference between parachor and rheochor?
parachor is depend on the surface tention of the liquid and its molar volume rheocor is depend upoun the viscosity of a liquid . both are additive and constiitutive property.
What is parachor value of carbon dioxide?
The parachor value of a substance is a measure of its molecular size and shape. For carbon dioxide, the parachor value would be specific to its molecular structure and characteristics, such as the number and arrangement of its atoms and their sizes. Calculating the precise parachor value for carbon dioxide would involve considering its properties in relation to other compounds.
Why molecular volume is used istead of molar volum in parachor?
Molecular volume is used in parachor calculations because it considers the actual space occupied by the molecules themselves, taking into account their shape and size. This is important for predicting intermolecular interactions. Molar volume, on the other hand, is a bulk property that does not provide the same level of detail for such calculations.
Basic concept of parachor and rheochor?
[p]=M/D*(surface tension)1/4 is called parachord [R]=M/D*(viscosity)1/8 is call rehochor
What is parachor value of carbon?
Sugden's parachor contribution values for molecular compounds were subsequently improved by Mumford and Phillips (1929), Quayle (1953) and Knotts et al. (2001) S.A. Mumford, J.W.C. Phillips, J. Chem. Soc. (1929) 2112-2133. O.R. Quayle, Chem. Rev. 53 (1953) 439-489. T.A. Knotts, W.V. Wilding, J.L. Oscarson, R.L. Rowley, J. Chem. Eng. Data 46 (2001) 1007-1012.
What is the Rheochor value of benzene?
The Rheochor value of benzene is 34.6 (cm³/cm²)⁻¹. This value represents the change in resistivity of a substance with respect to the rate of deformation.
