Suspension

A suspension is a homogenous mixture in which the solute particles do not dissolve but remain suspended throughout the bulk of the medium.

  • The particles of a suspension are visible to the naked eyes.
  • Paints are suspension of coloured substance is water or some other liquid.
  • Example Milk of magnesia is a suspension of magnesium hydroxide in water.
  • Lime water ( used for white wash) is a suspension of calcium hydroxide.
  • Bleaching powder in a water is also a suspension since bleaching powder is insoluble in water.
  • These suspended particles however settle as precipitate when the suspension is left undisturbed for sometimes.

Properties of suspension:

  • The solid particles of a suspension settle down when it is allowed to stand undisturbed for sometimes. In other word a suspension is unstable.
  • For example when carbon dioxide is pass through lime water taken in a test tube it turn milky. This is due to the reason that lime water contains calcium hydroxide which react with carbon dioxide to form in soluble calcium carbonate and water.
  • The particles of suspension cannot pass through filter paper, thus when a suspension is filtered the solid particles remain as residue on the filter paper.
  • Suspension are either opaque or translucent.
  • Particles scattered a beam of light passing through it make its path visible.
  • The size of suspension particles are near about 100nm.

Question Answer

1) What is suspension?

Answer:       A suspension is a homogenous mixture in which the solute particles do not dissolve but remain suspended throughout the bulk of the medium.

2) What are the example of suspension?

Answer: •  Example Milk of magnesia is a suspension of magnesium hydroxide in water.

  • For example when carbon dioxide is pass through lime water taken in a test tube it turn milky. This is due to the reason that lime water contains calcium hydroxide which react with carbon dioxide to form in soluble calcium carbonate and water.

3) Write the Properties of Suspension?

Answer: The properties of suspension are following.

  • The solid particles of a suspension settle down when it is allowed to stand undisturbed for sometimes. In other word a suspension is unstable.
  • For example when carbon dioxide is pass through lime water taken in a test tube it turn milky. This is due to the reason that lime water contains calcium hydroxide which react with carbon dioxide to form in soluble calcium carbonate and water.
  • The particles of suspension cannot pass through filter paper, thus when a suspension is filtered the solid particles remain as residue on the filter paper.
  • Suspension are either opaque or translucent.
  • Particles scattered a beam of light passing through it make its path visible.
  • The size of suspension particles are near about 100nm.

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