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प्रश्न
Pure water from impure water
- Give the principle involved in the separation of the mixture
- Give the technique of separation of the mixture.
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उत्तर
By Distillation
Principle- Based on the distillation of the liquid component in a soluble solid-liquid mixture.
Distillation – It is the process of converting a liquid into vapour by heating in a distillation flask & subsequent condensation of the vapour back into the liquid.
The method is used to separate a liquid from a soluble solid or pure liquid [water] from impure liquid [impure water].
The technique of Separation The soluble solid can be separated from its liquid component or pure water from impure water by placing the mixture i.e. impure water in the distillation flask.
On heating the distillation flask
The solid or solid impurities in the water remain behind in the distillation flask
The liquid or water vaporizes, condenses in the Liebig’s condenser, and is collected in the receiver.
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संबंधित प्रश्न
Explain the difference between Separation by distillation and by separating funnel.
Write an answer to the following question in your own words.
Which precaution will you take while using the methods of distillation and separation by separating funnel?
Choose the correct option.
Which of the following methods can be used to separate two compounds with different solubilities in the same solvent?
Choose the correct option.
Which of the following techniques is used for the separation of glycerol from soap in the soap industry?
Choose the correct option.
A mixture of acetone and benzene can be separated by the following method:
Define Distillation
Alcohol can be separated from water by ______.
Match the type of mixture of compounds in Column I with the technique of separation/purification given in Column II.
| Column I | Column II |
| (i) Two solids which have different solubilities in a solvent and which do not undergo reaction when dissolved in it. | (a) Steam distillation |
| (ii) Liquid that decomposes at its boiling point | (b) Fractional distillation |
| (iii) Steam volatile liquid | (c) Simple distillation |
| (iv) Two liquids which have boiling points close to each other | (d) Distillation under reduced pressure |
| (v) Two liquids with large difference in boiling points. | (e) Crystallisation |
Assertion (A): Simple distillation can help in separating a mixture of propan-1-ol (boiling point 97°C) and propanone (boiling point 56°C).
Reason (R): Liquids with a difference of more than 20°C in their boiling points can be separated by simple distillation.
Draw a diagram of bubble plate type fractionating column. When do we require such type of a column for separating two liquids. Explain the principle involved in the separation of components of a mixture of liquids by using fractionating column. What industrial applications does this process have?
