Podcast
Questions and Answers
What technique is essential for isolating and purifying organic substances?
What technique is essential for isolating and purifying organic substances?
- Crystallization
- Extraction (correct)
- Filtration
- Distillation
Why is a water wash necessary in the extraction process?
Why is a water wash necessary in the extraction process?
- To enhance the solubility of caffeine
- To purify the organic compound (correct)
- To increase the polarity of the solvent
- To remove organic impurities
Which of the following solvents is commonly used for extracting caffeine from tea?
Which of the following solvents is commonly used for extracting caffeine from tea?
- Dichloromethane (correct)
- Diethyl ether
- Hexane
- Ethanol
What is the purpose of adding a drop of water to identify the organic layer?
What is the purpose of adding a drop of water to identify the organic layer?
How can an emulsion be prevented during the shaking process?
How can an emulsion be prevented during the shaking process?
Which physicochemical test can be used to identify the presence of phenolic compounds like vanillin?
Which physicochemical test can be used to identify the presence of phenolic compounds like vanillin?
Which solvent is suitable for extracting a nonpolar organic compound from an aqueous solution?
Which solvent is suitable for extracting a nonpolar organic compound from an aqueous solution?
In separation techniques, what plays an important role in extracting a solute from one solvent into another?
In separation techniques, what plays an important role in extracting a solute from one solvent into another?
'Washing' operation in extraction involves adding what to the reaction mixture?
'Washing' operation in extraction involves adding what to the reaction mixture?
'Stopping the funnel and shaking it' in extraction aims to achieve what outcome?
'Stopping the funnel and shaking it' in extraction aims to achieve what outcome?
