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.


  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.


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.


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.