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Solubility03:00

Solubility

22.9K
Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
22.9K
Solvating Effects02:12

Solvating Effects

9.2K
An understanding of the solvating effect helps rationalize the relation between solvation and acidity of the compound. In addition, this also explains the relative stability of conjugate bases for compounds with different pKa values. This lesson details, in-depth, the principle of solvating effects. The strength of an acid and the stability of its corresponding conjugate base are determined using pKa values. This observed relationship is a consequence of solvation, which is the interaction...
9.2K
Entropy and Solvation02:05

Entropy and Solvation

8.8K
The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
8.8K
Chemical and Solubility Equilibria02:21

Chemical and Solubility Equilibria

5.2K
The free energy change associated with dissolving a solute in a liter of solvent is called the free energy of a solution, ΔGsolution. The overall ΔGsolution is expressed as the balance of ΔGinteraction against the always-favorable free-energy of mixing, ΔGmixing. Solution formation is favorable if  ΔGsolution is less than zero, whereas it is unfavorable if ΔGsolution is greater than zero. In short, for a solution to form and complete dissolution to take place,...
5.2K
Solubility Equilibria: Overview01:09

Solubility Equilibria: Overview

1.9K
When a substance such as sodium chloride is added to water, it dissolves, forming an aqueous solution. The extent of dissolution is called solubility. The process of dissolution can exist in equilibrium, just like other chemical processes. Solubility equilibria are also called precipitation equilibria because the process of solubility can be reversible. The reverse of the solubility process is called precipitation.
Solubility is important in biological and environmental processes. A notable...
1.9K
Colligative Properties01:18

Colligative Properties

91
When a solute is added to a pure solvent (A), the mole fraction of A decreases. The mole fraction is the ratio of the number of moles of A to the total number of moles in the solution. This decrease in mole fraction leads to a reduction in A's chemical potential (μA).The changes in μA also affect the solution's colligative properties. Colligative properties are properties of a solution that depend only on the number of solute particles present, not their identity. Examples include...
91

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関連する実験動画

Updated: Apr 7, 2026

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method
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Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Published on: June 14, 2019

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非極性結合相互作用におけるソルボホービック効果の定量化

Lixu Yang1, Catherine Adam1, Scott L Cockroft1

  • 1EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, U.K.

Journal of the American Chemical Society
|July 11, 2015
PubMed
まとめ
この要約は機械生成です。

バイオ分子にとって極めて重要なソルボフォビック効果は,結合エネルギー密度 (cd) を用いて定量化できるようになった. この記述器は,表面張力とは異なり,非極性相互作用に対する溶媒の影響を正確に測定します.

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Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy
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Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

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Investigating Single Molecule Adhesion by Atomic Force Spectroscopy
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Investigating Single Molecule Adhesion by Atomic Force Spectroscopy

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関連する実験動画

Last Updated: Apr 7, 2026

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method
07:18

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Published on: June 14, 2019

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Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy
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Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

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Investigating Single Molecule Adhesion by Atomic Force Spectroscopy
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Investigating Single Molecule Adhesion by Atomic Force Spectroscopy

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科学分野:

  • 物理化学 物理化学
  • バイオケミストリー バイオケミストリー
  • 材料科学 材料科学とは

背景:

  • 遠水性効果は,バイオ分子構造と機能にとって極めて重要です.
  • より広範なソルボフォビック効果には普遍的な記述子がなく,様々な溶媒での研究を妨げています.
  • 溶媒の相互作用を理解することは,分子行動の予測の鍵です.

研究 の 目的:

  • 様々な化学的文脈におけるソルボホービック効果の信頼性の高い記述者を特定する.
  • アロマティック,アリファティック,フッ素型を含む非極性相互作用に対する溶媒の効果を定量化するために.
  • ソルボフービック・アソシエーションを測定するための新しい基準を確立する.

主な方法:

  • 溶媒効果を測定するために合成分子バランスを利用しました.
  • 非極性相互作用のさまざまなタイプで溶媒のスクリーニングを行いました.
  • 超分子結合,単一分子折りたたみ,相転移エネルギーからの統合データ.

主要な成果:

  • 凝固エネルギー密度 (cd) は,測定された溶媒効果と強く相関しています.
  • 表面張力,内部圧力などの他の凝結度計は,より弱い相関を示した.
  • Cedは,アロマティック,アリファティック,およびフッ素化学システム全体で有効であることが証明されました.

結論:

  • Cohesive energy density (cd) は,ソルボフォビック効果の強固で定量的な記述として確立されています.
  • Cedは,従来のメトリックよりも,溶媒相互作用のより正確でアクセシブルな測定法を提供します.
  • この発見は,溶液中の分子行動の理解と予測を前進させる.