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Related Concept Videos

Factors Affecting Solubility04:01

Factors Affecting Solubility

37.2K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
37.2K
Solubility Equilibria03:07

Solubility Equilibria

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Solubility equilibria are established when the dissolution and precipitation of a solute species occur at equal rates. These equilibria underlie many natural and technological processes, ranging from tooth decay to water purification. An understanding of the factors affecting compound solubility is, therefore, essential to the effective management of these processes. This section applies previously introduced equilibrium concepts and tools to systems involving dissolution and precipitation.
The...
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Solubility of Ionic Compounds02:55

Solubility of Ionic Compounds

68.3K
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
68.3K
Physical Properties Affecting Solubility02:19

Physical Properties Affecting Solubility

26.8K
Solutions of Gases in Liquids
As for any solution, the solubility of a gas in a liquid is affected by the attractive intermolecular forces between solute and solvent species. Unlike solid and liquid solutes, however, there is no solute-solute intermolecular attraction to overcome when a gaseous solute dissolves in a liquid solvent since the atoms or molecules comprising a gas are far separated and experience negligible interactions. Consequently, solute-solvent interactions are the sole...
26.8K
Rationalizing Substitutions01:29

Rationalizing Substitutions

62
Integrals involving non-rational functions are often difficult to evaluate using standard techniques, especially when radicals appear in the integrand. Rationalizing substitution provides a systematic method for simplifying such integrals by converting them into rational forms that are easier to handle.Consider a rod whose linear mass density depends on a constant linear density, a characteristic length, and the distance from the left end of the rod. Determining the total mass requires...
62
Rational Expressions01:28

Rational Expressions

409
Rational expressions are algebraic fractions in which both the numerator and the denominator are polynomials. These expressions follow the arithmetic rules of numerical fractions but require extra care due to the presence of variables. A fundamental part of working with rational expressions is identifying values that make the expression undefined, typically those that result in division by zero or undefined radicals.Determining the DomainThe domain of a rational expression includes all real...
409

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Organogel formation rationalized by Hansen solubility parameters: improved methodology.

Danilo Rosa Nunes1, Matthieu Raynal, Benjamin Isare

  • 1Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire (IPCM), Equipe Chimie des Polymères, F-75005 Paris, France. laurent.bouteiller@sorbonne-universite.fr.

Soft Matter
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Summary

Researchers developed a universal method to predict organogel formation using solubility data. This approach overcomes limitations of existing methods, enabling broader application in materials science and formulation development.

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Area of Science:

  • Materials Science
  • Supramolecular Chemistry
  • Physical Chemistry

Background:

  • Organogels are formed when low molar mass compounds create fibrous networks in liquids, solidifying the medium.
  • Existing methods correlating organogel formation with Hansen solubility parameters are often dataset-specific and lack universal applicability.

Purpose of the Study:

  • To develop a general and universally applicable method for predicting organogelation domains.
  • To establish a robust correlation between solubility data and the gelation behavior of low molecular weight gelators.

Main Methods:

  • Utilizing solubility data of low molecular weight gelators.
  • Developing a generalized approach to map gelation domains based on thermodynamic principles.

Main Results:

  • A novel, broadly applicable method for determining organogelation domains has been established.
  • The new method demonstrates improved universality compared to previous approaches.

Conclusions:

  • The reported method provides a significant advancement in understanding and predicting organogel formation.
  • This universal approach is expected to facilitate the design and application of novel organogel systems across various fields.