Solutions, Acid Base And Colloidals

A homogeneous mixture of two or more substances is called solution. The dissolved substance is called solutes. 1  substance  which dissolves a solute is called solvent. The solutions in which water acts as solvent are called aqueous solutions. For example solution of water and salt.

Types of solutions

There are following types of solutions

  1. Dilute Solution: A solution with small amount of solutes is called dilute solution.
  2. Concentrated solutions: A solution with a large amount of solutes is called concentrated solution.
  3. Saturated Solution: A solution in which more solutes cannot be dissolved is called saturated solution. If the solute is added continuously a stage comes when the solute starts settling down. This stage is saturated solution.
  4. Supersaturated Solution: A saturated solution that can dissolve more solute when the temperature is increased is called supersaturated solution. Increases in temperature increases solubility of a solid in liquid. Thus the excess solute dissolves on heating. It forms a supersaturated solution. If more solute is added to a supersaturated solution the excess amount of solute will crystallize. Thus a saturated solution left.Properties of solutions

    There are following properties of solutions.



    1. The particles of solutes are present in the form of molecules or ions.
    2. There is a uniform distribution of solutes particles in the solvent.
    3. The solutes can pass through a filter.
    4. The solution shrims process of osmosis and diffusion.
    5. Solution can diffuse through a semi- permeable membrane.
    6. The particles are not visible to naked eye.
    7. The solutes do not scatter light rays.

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