Differential Extraction
Differential extraction of organic compound from aqueous solution uses an organic solvent that is:
Select the correct option:
Solution
Immiscible with water and selective dissolving solute
- Goal: To extract an organic compound that is present in an aqueous (water) solution.
- Reagent Selection: A solvent is added that is immiscible with water (e.g., Ether, Chloroform).
- Partition Principle: The organic compound should be significantly more soluble in the organic solvent than in water.
- Process: The aqueous solution and the organic solvent are shaken in a separating funnel. The compound 'partitions' itself between the two layers.
- Efficiency: Performing multiple extractions with smaller volumes of solvent is more efficient than a single extraction with a large volume.
- Separation: The two layers (aqueous and organic) are then separated due to density differences.
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In differential extraction using separating funnel, the compound preferentially dissolves in:
In differential extraction using separating funnel, the compound preferentially dissolves in:
About This Question
- Subject
- chemistry
- Chapter
- purification techniques
- Topic
- differential extraction
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Immiscible with water and selective dissolving solute
- Goal: To extract an organic compound that is present in an aqueous (water) solution.
- Reagent Selection: A solvent is added that is immiscible with water (e.g., Ether, Chloroform).
- Partition Principle: The organic compound should be significantly more soluble in the organic solvent than in water.
- Process: The aqueous solution and the organic solvent are shaken in a separating funnel. The compound 'partitions' itself between the two layers.
- Efficiency: Performing multiple extractions with smaller volumes of solvent is more efficient than a single extraction with a large volume.
- Separation: The two layers (aqueous and organic) are then separated due to density differences.
This medium difficulty chemistry question is from the chapter purification techniques, covering the topic of differential extraction. It appeared in the 2025 exam.
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