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Related Concept Videos

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Solubility of Ionic Compounds

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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.
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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).
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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...
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A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
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Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
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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...
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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
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Criteria for solvate ionic liquids.

Toshihiko Mandai1, Kazuki Yoshida, Kazuhide Ueno

  • 1Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan. mwatanab@ynu.ac.jp.

Physical Chemistry Chemical Physics : PCCP
|March 29, 2014
PubMed
Summary
This summary is machine-generated.

Ionic liquids are concentrated salt-solvent mixtures. This paper proposes criteria for solvate ionic liquids, exploring lithium salt and solvent interactions to distinguish them from traditional solutions.

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Area of Science:

  • Chemistry
  • Materials Science

Background:

  • Concentrated salt-solvent mixtures challenge traditional solution definitions.
  • The concept of "solvate" ionic liquids requires clear criteria for classification.

Purpose of the Study:

  • To propose and debate criteria for identifying solvate ionic liquids.
  • To investigate lithium salt-organic solvent mixtures as models for solvate ionic liquids.

Main Methods:

  • Examining the influence of salt concentration on mixture properties.
  • Analyzing the effects of different organic solvents and lithium salt counter anions.
  • Contrasting properties of these mixtures with traditional solutions.

Main Results:

  • Structural and property variations were observed with changes in salt concentration, solvent type, and anion.
  • These variations provide a basis for distinguishing solvate ionic liquids.

Conclusions:

  • Defining clear criteria is essential for the classification of solvate ionic liquids.
  • Understanding these mixtures advances the field of ionic liquids and materials science.