Suspension
Suspension
A suspension is a heterogeneous mixture in which small particles of a solid remain suspended throughout the mass of the liquid or gas. For example, mud, sand and chalk particles remain suspended in water. Solid particles may remain suspended even in a gas. These mixtures are called suspensions.
Examples: Muddy water, sand - water mixture, chalk - water mixture, paints, etc., are suspensions.
Properties of suspensions :-
Comparison of properties of solution, colloidal solution and suspension:-
| Properties | True solution | Colloidal solution | Suspension |
|---|---|---|---|
| 1. Appearance | Homogeneous and transparent | Heterogeneous and translucent | Heterogeneous and opaque |
| 2. Particle size |
|
||
| 3. Visibility |
Particles are not visible even with a powerful microscope. |
Particles can be seen with a high power microscope. |
Particles can be seen with naked eyes. |
| 4. Stability | Stable | Stable | Unstable |
| 5. Diffusion | Diffuses rapidly | Diffuses slowly | Does not diffuse |
| 6. Brownian Motion | Shows no Brownian motion | Shows Brownian motion | Shows no Brownian motion |
| 7. Example | NaCI dissolved in water | Blood | Mud water |
Which of the following solutions is the least stable? | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following are correct : (a) Solid particles may remain suspended even in a gas. (b) The particles in a suspension are large enough to be visible either to the unaided eye or under an ordinary microscope. (c) Muddy water, sand - water mixture, chalk - water mixture, paints, etc., are suspensions. | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following are correct: (a) A suspension is a heterogeneous mixture. (b) The particles in a suspension can be separated from the liquid by filtration. (c) In a suspension, the size (diameter) of the particles is of the order of 10-5 cm or larger. | |||
| Right Option : D | |||
| View Explanation | |||
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