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Question
Explain the following giving an example.
Suspension
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Solution
- Suspensions are heterogeneous mixtures. The solute particles in this mixture remain suspended throughout the bulk of the medium.
- The particles can be seen with the naked eye. Suspension shows the Tyndall effect. The solute particles settle down when the mixture is left undisturbed.
- This means that suspensions are unstable. Suspensions can be separated by the method of filtration.
- For example, mixtures of chalk powder and water, wheat flour and water.
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Pragya tested the solubility of three different substances at different temperatures and collected the data as given below (results are given in the following table, as grams of substance dissolved in 100 grams of water to form a saturated solution).
| Substance dissolved | Temperature in K | ||||
| 283 | 293 | 313 | 333 | 353 | |
| Solubility | |||||
| Potassium nitrate | 21 | 32 | 62 | 106 | 167 |
| Sodium chloride | 36 | 36 | 36 | 37 | 37 |
| Potassium chloride | 35 | 35 | 40 | 46 | 54 |
| Ammonium chloride | 24 | 37 | 41 | 55 | 66 |
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