Parachore is a term used to describe the change in the interaction between components in chemical reactions, without an actual change in the structure of the reactants themselves. It refers to the rearrangement of non-covalent interactions in the reaction system. The concept of parachore helps explain the selectivity and reactivity of chemical reactions.

the molecular of aliquid times 4th root of its surface tension divided by diff in the density of liquid and desity of vapour at constant wide range of temp

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What is parachore?

Anonymous

∙ 11y ago

Updated: 5/21/2024

A parachor is a constant for a liquid that relates the surface tension to the molecular volume. The formula is P = y^(1/4)(M/d) where y is the 4th root of the surface tension. M is the molar mass, and d is the density.

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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

What is parachore and its effect in chemistry?

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