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Concept of Solution

description

  • Solution
  • Components of Solution
  • Properties of Solution

definition

  • Solution: A solution is a homogeneous mixture of two or more substances.
  • Solvent: The component of the solution that dissolves the other component in it and is usually present in a larger amount, such component of the solution is called the solvent. For example Water, alcohol, etc.
  • Solute: The component of the solution that is dissolved in the solvent and is usually present in lesser quantity, such component is called the solute. For example Salt, sugar, iodine, etc.

notes

Solution:

  • A solution is a homogeneous mixture of two or more substances. 
  • Lemonade, soda water, etc. are examples of solutions. 

Components of Solution:

  • Solvent: The component of the solution that dissolves the other component in it and is usually present in a larger amount, such component of the solution is called the solvent.
    For example Water, alcohol, etc.
  • Solute: The component of the solution that is dissolved in the solvent and is usually present in lesser quantity, such component is called the solute. For example Salt, sugar, iodine, etc.

Examples of Solution:

  1. A solution of sugar in water is solid in a liquid solution. In this solution, sugar is the solute and water is the solvent.
  2. A solution of iodine in alcohol known as ‘tincture of iodine’, has iodine (solid) as the solute and alcohol (liquid) as the solvent.
  3. Aerated drinks like soda water etc., are gas in liquid solutions. These contain carbon dioxide (gas) as solute and water (liquid) as a solvent.
  4. Air is a mixture of gas in gas. Air is a homogeneous mixture of a number of gases. Its two main constituents are oxygen (21%) and nitrogen (78%). The other gases are present in very small quantities.

Properties of Solution:

  • A solution is a homogeneous mixture.
  • The particles of a solution are smaller than 1 nm (10-9 meters) in diameter. So, they cannot be seen by naked eyes.
  • Because of very small particle size, they do not scatter a beam of light passing through the solution. So, the path of
    light is not visible in a solution.
  • The solute particles cannot be separated from the mixture by the process of filtration. The solute particles do not settle down when left undisturbed, that is, a solution is stable.

Example

How are sol, solution and suspension different from each other?

Sol is a heterogeneous mixture. In this mixture, the solute particles are so small that they cannot be seen with the naked eye. Also, they seem to be spread uniformly throughout the mixture. The Tyndall effect is observed in this mixture. For example: milk of magnesia, mud

Solution is a homogeneous mixture. In this mixture, the solute particles dissolve and spread uniformly throughout the mixture. The Tyndall effect is not observed in this mixture. For example: salt in water, sugar in water, iodine in alcohol, alloy

Suspensions are heterogeneous mixtures. In this mixture, the solute particles are visible to the naked eye, and remain suspended throughout the bulk of the medium. The Tyndall effect is observed in this mixture. For example: chalk powder and water, wheat flour and water

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