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Dibutyl amine (C4H9)2NH and anisole (C6H5OCH3), have similar boiling points, and are relatively insoluble in water. How might a mixture of these compounds be separated into pure components?
  • a)
    (i) dissolve mixture in ether; (ii) extract the anisole into 10% NaOH solution
  • b)
    (i) dissolve mixture in ether; (ii) extract the amine into 10% aqueous HCI solution
  • c)
    (i) dissolve mixture in ether; (ii) extract the amine into 10% NaOH solution
  • d)
    (i) dissolve mixture in ether; (ii) extract the anisole into 10% HCI solution
Correct answer is option 'B'. Can you explain this answer?
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Dibutyl amine (C4H9)2NH and anisole (C6H5OCH3), have similar boiling p...
Amine will form salt with HCI and it will be extracted into aqueous layer.
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Dibutyl amine (C4H9)2NH and anisole (C6H5OCH3), have similar boiling p...
Separation of Dibutyl Amine and Anisole
To separate a mixture of dibutyl amine and anisole, we can utilize their differing chemical properties. Here's a detailed explanation of why option (b) is the correct method.
Properties of the Compounds
- Dibutyl Amine (C4H9)2NH: This is a basic amine.
- Anisole (C6H5OCH3): This is an ether and is relatively neutral.
Step 1: Dissolving the Mixture
- Dissolve in Ether: Both dibutyl amine and anisole are soluble in ether, allowing for the initial dissolution of the mixture.
Step 2: Extraction with Aqueous Solutions
- Extraction with 10% Aqueous HCl:
- Dibutyl amine can react with hydrochloric acid (HCl) to form a water-soluble ammonium salt, which allows it to be extracted into the aqueous layer.
- Anisole remains unreacted and stays in the organic (ether) layer.
Why Other Options are Incorrect
- Option (a): Using 10% NaOH would not effectively extract anisole, as it is neutral and does not react with bases.
- Option (c): Using 10% NaOH to extract dibutyl amine would not work since dibutyl amine is a weak base and will not be protonated effectively by NaOH.
- Option (d): Using 10% HCl to extract anisole is ineffective because anisole does not react with HCl and will remain in the organic layer.
Conclusion
- The correct method involves dissolving the mixture in ether and then utilizing 10% aqueous HCl to selectively extract dibutyl amine, leaving anisole behind in the ether layer. This separation method capitalizes on the distinct acid-base properties of the two compounds.
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Dibutyl amine (C4H9)2NH and anisole (C6H5OCH3), have similar boiling points, and are relatively insoluble in water. How might a mixture of these compounds be separated into pure components?a)(i) dissolve mixture in ether; (ii) extract the anisole into 10% NaOH solutionb)(i) dissolve mixture in ether; (ii) extract the amine into 10% aqueous HCI solutionc)(i) dissolve mixture in ether; (ii) extract the amine into 10% NaOH solutiond)(i) dissolve mixture in ether; (ii) extract the anisole into 10% HCI solutionCorrect answer is option 'B'. Can you explain this answer?
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Dibutyl amine (C4H9)2NH and anisole (C6H5OCH3), have similar boiling points, and are relatively insoluble in water. How might a mixture of these compounds be separated into pure components?a)(i) dissolve mixture in ether; (ii) extract the anisole into 10% NaOH solutionb)(i) dissolve mixture in ether; (ii) extract the amine into 10% aqueous HCI solutionc)(i) dissolve mixture in ether; (ii) extract the amine into 10% NaOH solutiond)(i) dissolve mixture in ether; (ii) extract the anisole into 10% HCI solutionCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Dibutyl amine (C4H9)2NH and anisole (C6H5OCH3), have similar boiling points, and are relatively insoluble in water. How might a mixture of these compounds be separated into pure components?a)(i) dissolve mixture in ether; (ii) extract the anisole into 10% NaOH solutionb)(i) dissolve mixture in ether; (ii) extract the amine into 10% aqueous HCI solutionc)(i) dissolve mixture in ether; (ii) extract the amine into 10% NaOH solutiond)(i) dissolve mixture in ether; (ii) extract the anisole into 10% HCI solutionCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Dibutyl amine (C4H9)2NH and anisole (C6H5OCH3), have similar boiling points, and are relatively insoluble in water. How might a mixture of these compounds be separated into pure components?a)(i) dissolve mixture in ether; (ii) extract the anisole into 10% NaOH solutionb)(i) dissolve mixture in ether; (ii) extract the amine into 10% aqueous HCI solutionc)(i) dissolve mixture in ether; (ii) extract the amine into 10% NaOH solutiond)(i) dissolve mixture in ether; (ii) extract the anisole into 10% HCI solutionCorrect answer is option 'B'. Can you explain this answer?.
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