Table of contents

1. A Review of General Chemistry5h 5m
2. Molecular Representations1h 14m
3. Acids and Bases2h 46m
4. Alkanes and Cycloalkanes4h 17m
5. Chirality3h 39m
6. Thermodynamics and Kinetics1h 22m
7. Substitution Reactions1h 48m
8. Elimination Reactions2h 30m
9. Alkenes and Alkynes2h 9m
10. Addition Reactions3h 19m
11. Radical Reactions1h 58m
12. Alcohols, Ethers, Epoxides and Thiols2h 42m
13. Alcohols and Carbonyl Compounds2h 17m
14. Synthetic Techniques1h 26m
15. Analytical Techniques:IR, NMR, Mass Spect7h 3m
16. Conjugated Systems6h 13m
17. Ultraviolet Spectroscopy51m
18. Aromaticity2h 34m
19. Reactions of Aromatics: EAS and Beyond5h 1m
20. Phenols55m
21. Aldehydes and Ketones: Nucleophilic Addition4h 56m
22. Carboxylic Acid Derivatives: NAS2h 51m
23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides1h 10m
24. Enolate Chemistry: Reactions at the Alpha-Carbon1h 53m
25. Condensation Chemistry2h 9m
26. Amines1h 43m
27. Heterocycles2h 0m
28. Carbohydrates5h 53m
29. Amino Acids4h 20m
30. Peptides and Proteins2h 42m
31. Catalysis in Organic Reactions1h 30m
32. Lipids 2h 50m
33. The Organic Chemistry of Metabolic Pathways2h 52m
34. Nucleic Acids1h 32m
35. Transition Metals6h 14m
36. Synthetic Polymers1h 49m

5. Chirality

Constitutional Isomers vs. Stereoisomers

Organic Chemistry

5. Chirality

Constitutional Isomers vs. Stereoisomers

Previous problemNext problem

3:31 minutes

Problem 5

Textbook Question

Which of the following pairs of compounds could be separated by recrystallization or distillation?b. and

Verified step by step guidance

insert step 1

insert step 2

insert step 3

insert step 4

insert step 5

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above

Video duration:

Play a video:

Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Recrystallization

Recrystallization is a purification technique used to separate compounds based on differences in their solubility. When a solid compound is dissolved in a hot solvent and then allowed to cool, pure crystals form as the solubility decreases. Impurities remain in the solution, allowing for the isolation of the desired compound. This method is particularly effective for compounds with similar melting points.

Distillation

Distillation is a separation process that relies on differences in boiling points of compounds. In this technique, a mixture is heated until the component with the lower boiling point vaporizes, then the vapor is cooled and condensed back into a liquid. This method is ideal for separating volatile liquids or for purifying liquids from non-volatile impurities, making it a common technique in organic chemistry.

Polarity and Solubility

Polarity refers to the distribution of electrical charge over the atoms in a molecule, influencing its solubility in various solvents. Compounds with similar polarities tend to dissolve well in each other, while those with differing polarities may not. Understanding the polarity of the compounds in question is crucial for determining the appropriate method of separation, as it affects both recrystallization and distillation outcomes.

Watch next

Master Determining when molecules are different. with a bite sized video explanation from Johnny

Start learning

Related Videos

Related Practice

Textbook Question

How many stereoisomers are possible for the following alkenes?

(c)

Textbook Question

b. Draw the six stereoisomers of octa-2,4,6-triene. Explain why there are only six stereoisomers, rather than the eight we might expect for a compound with three stereogenic double bonds.

Textbook Question

Draw the six stereoisomers of octa-2,4,6-triene. Explain why there are only six stereoisomers, rather than the eight we might expect for a compound with three stereogenic double bonds.

Textbook Question

For each pair, give the relationship between the two compounds. Making models will be helpful.

(c)

(d)

Textbook Question

Which of the following pairs of compounds could be separated by recrystallization or distillation?

(b)

Textbook Question

How many would there be if stereoisomers are included?

Textbook Question

Draw the enantiomer of each of the molecules you drew in Assessment 6.52.

Textbook Question