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Introduction to Chemistry and Laboratory Apparatus | Week 15 Topics1 Quiz
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Nature of Matter | Week 23 Topics1 Quiz
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Separation Techniques I | Week 31 Topic
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Separation Techniques II | Week 45 Topics1 Quiz
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Particulate Nature of Matter I | Week 55 Topics1 Quiz
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Particulate Nature of Matter II | Week 69 Topics1 Quiz
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Symbols, Formulae & Oxidation Number | Week 77 Topics1 Quiz
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Laws of Chemical Combination | Week 84 Topics1 Quiz
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Chemical Equation & Chemical Combination (Chemical Bonding) I | Week 94 Topics1 Quiz
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Chemical Combination (Chemical Bonding) II | Week 104 Topics1 Quiz
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Chemical Combination (Chemical Bonding) III & Shapes of Covalent Molecules | Week 113 Topics1 Quiz
Topic Content:
- Separating Funnel
Immiscible liquids can be separated by decantation using a separating funnel. For example, water and kerosene. The use of a separating funnel is based on the difference in the polarities of the liquids.
Water is a polar solvent, while most organic solvents are non-polar, hence, immiscible with water.
Procedure:
Put the two immiscible liquids in the separating funnel as shown in the diagram above.
Allow the two mixtures to be separated into two layers.
On opening the tap, the liquid which is denser (water) will run off from the funnel to the beaker while the less dense liquid (petrol) remains in the funnel. Examples of non-polar organic solvents that are immiscible with water are vegetable oil, paraffin, benzene, petrol, turpentine, tetrachloromethane, etc.
Thanks for the diagram.