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Sugden defined in 1924 parachor as P=(surface tension in mN/m)^(1/4).(molar mass in g/mol).(density in g/cm^3), which is equivalent to (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.
Sugden showed empirically that P is additive with respect to the composition of molecules of compounds from different atoms and atomic groups. As a result, when the values of the contributions to parachor from the individual atomic groups of molecules are known the surface tension of substances can be evaluated from their molecular structure.
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
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What is the parachor value of toluene?
110.4 is the value of parachor for methanol
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 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 is parachore and its effect in chemistry?
Parachor is a quantity relating the surface tension to the molecular weight and density. It is defined by the formula (surface tension ^1/4) * M / d. Parachor is used in solving structural problems. 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
What is parachor value of carbon dioxide?
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 parachor value of toluene?
110.4 is the value of parachor for methanol
How couid you justify additive and constitutive property of parachor?
The additive property of parachor suggests that the parachor value of a mixture can be calculated by summing the parachor values of the individual components. This can be justified by understanding that the parachor value is a measure of the cohesive energy density of a substance, which depends on its molecular structure. The constitutive property of parachor, on the other hand, implies that the parachor value is a fundamental property of a substance, determined by its chemical composition and structure.
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 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 is the application of parachor?
Parachor is a useful parameter in physical chemistry and materials science, primarily applied to characterize the surface tension of liquids and the properties of polymers. It helps in understanding the intermolecular forces within a solution or between different phases. Additionally, parachor values can aid in predicting the behavior of substances in various applications, such as in the formulation of emulsions, foams, and coatings. By analyzing parachor, researchers can gain insights into molecular structure and dynamics.
What is the unit of parachor in cgs system?
The unit of parachor in the cgs (centimeter-gram-second) system is typically given in cubic centimeters to the power of 1.5 per dyne to the power of 1/2 (cm^3/2·dyne^-1/2). So, the unit of parachor in the cgs system can be expressed as: Parachor unit = cm 3 / 2 ⋅ dyne − 1 / 2 Parachor unit=cm 3/2 ⋅dyne −1/2
What is the parachor value of hexane by simplification?
The parachor value of hexane can be estimated using its molecular weight and density. Hexane (C6H14) has a molecular weight of approximately 86.18 g/mol and a density of about 0.6548 g/cm³. The parachor value is calculated as the product of the molecular weight and a constant related to the density, resulting in a parachor value of approximately 60.5. This value reflects the cohesive forces in the liquid phase and is useful in characterizing its physical properties.
What are the factors that affecting the property of PARACHOR?
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What is parachore and its effect in chemistry?
Parachor is a quantity relating the surface tension to the molecular weight and density. It is defined by the formula (surface tension ^1/4) * M / d. Parachor is used in solving structural problems. 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
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 the unit of parachor?
The unit of parachor is typically expressed in square root centimeter gram second (cm^3/2 g^1/2 s^-1), which represents the intermolecular forces between molecules in a liquid system. Parachor is a dimensionless quantity that correlates with the surface tension and molecular weight of a substance, providing information about its cohesive and dispersive properties. It is commonly used in the study of intermolecular interactions and the prediction of physical properties of liquids.
What is parachor value of carbon dioxide?
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.
