Solubility, Factors and Solute-Solvent interaction.

In this topic i will discuss the solubility of solvents with solute and the factors which impact on solubility. Here you will find that how solute-solvent interact with each other.

Definition (Solubility):

Solubility is defined as the number of grams of solute dissolved in 100 grams of solvent to prepare a saturated solution at a particular temperature.

Factors:

  1. General Principle of solubility is “Like dissolve like”.
  • Ionic or polar compounds dissolved in polar solvents. For Example, KCl, Na2CO3, CuSO4, sugar and alcohol are polar and dissolve in water because water is also polar.
  • Non-Polar compounds are not soluble in water such as oil is non-polar and it is not dissolved in water because water is polar.
  • Non-Polar substances are soluble in non-polar substances such as oil is non-polar and it is dissolved in ether as both are non-polar.
  1. Solute Solvent interaction.

Explain Solute-Solvent interaction with example:

In order to dissolve solute in solvent, following conditions must be fulfilled.

  1. Solute-Solute bonding should be broken.
  2. Solvent-Solvent bonding should be broken.
  3. Solute-Solvent attraction should be maximum.

Explanation:

If there is more attraction between solute-solvent attraction in comparison with solute-solute interaction, then solution will be form.

If Solute-solute interaction is greater than solute-solvent, then solute remains insoluble.

Example:

Here is an example of NaCl, Na ion will attracted by OH ion of water and Cl ion is attracted by hydrogen ion of water as it has positive charge.

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Fawad's Chemistry

Hope you fine. I'm Fawad and author of this blog "Chemanalogy". Love to write on Chemistry. Currently teaching A Levels, O Levels and University Chemistry offline as well as online. Connect to chemanalogy community by subscribing via email.