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Questions and Answers
Liquid-liquid extraction is also known as ______ extraction
Liquid-liquid extraction is also known as ______ extraction
solvent
Solutes are separated based on their different solubilities in different ______
Solutes are separated based on their different solubilities in different ______
liquids
The process of liquid-liquid extraction is suitable for thermally ______ and high-boiling compounds
The process of liquid-liquid extraction is suitable for thermally ______ and high-boiling compounds
labile
An organic ______ is added to the aqueous solution containing solutes in liquid-liquid extraction
An organic ______ is added to the aqueous solution containing solutes in liquid-liquid extraction
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Compound A is soluble in ______ and insoluble in water
Compound A is soluble in ______ and insoluble in water
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Study Notes
Liquid-Liquid Extraction
- Liquid-liquid extraction, also known as solvent extraction, is a separation process that involves the transfer of a solute from one solvent to another, with the two solvents being immiscible.
Separation Principle
- Separation is based on the different solubilities of solutes in different liquids.
- The original solution is transferred to another liquid solution, separating the substances that constitute the original solution.
Advantages
- Simple process
- Low cost
- Suitable for thermally labile and high-boiling compounds
Disadvantages
- Time-consuming process
- Tedious
- Environmental concerns
Liquid-Liquid Extraction Steps
- Add an organic solvent to an aqueous solution containing solutes, forming two immiscible layers.
- Mix the layers by moderately shaking, then stop the process for a few minutes to allow the layers to separate.
- Separate the layers.
Separation Using a Separation Funnel
- Can be used to separate immiscible liquids.
Example: Separation of Organic Compound A and Inorganic Salt B
- Compound A is soluble in ether and insoluble in water.
- Compound B is soluble in water and insoluble in ether.
- Steps for separation:
- Add ether to the mixture containing A and B, forming two immiscible layers.
- Mix the layers, then stop the process to allow separation.
- Separate the ether layer containing A from the water layer containing B.
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Description
This quiz covers the concept of liquid-liquid extraction, a separation process that transfers solutes from one solvent to another. It involves the transfer of solutes based on their different solubilities in different liquids.
