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

2. Molecular Representations

Functional Groups

Organic Chemistry

2. Molecular Representations

Functional Groups

Previous problemNext problem

4:28 minutes

Problem 24a,b,c

Textbook Question

Classify the following hydrocarbons, and draw a Lewis structure for each one. A compound may fit into more than one of the following classifications:
alkane
alkene
alkyne
cycloalkane
cycloalkene
cycloalkyne
aromatic
hydrocarbon
a. (CH₃CH₂)₂CHCH(CH₃)₂
b. CH₃CHCHCH₂CH₃
c.. CH₃CCCH₂CH₂CH₃

Verified step by step guidance

Identify the structure of each hydrocarbon by expanding the condensed formulas. For example, (CH3CH2)2CHCH(CH3)2 can be expanded to show all carbon and hydrogen atoms explicitly.

Classify each hydrocarbon based on the presence of single, double, or triple bonds, and any cyclic structures. For example, if a compound contains only single bonds, it is an alkane.

For compound a, (CH3CH2)2CHCH(CH3)2, recognize that it contains only single bonds and no rings, classifying it as an alkane.

For compound b, CH3CHCHCH2CH3, identify the presence of a double bond between the second and third carbon atoms, classifying it as an alkene.

For compound c, CH3CCCH2CH2CH3, note the presence of a triple bond between the second and third carbon atoms, classifying it as an alkyne.

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.

Hydrocarbon Classification

Hydrocarbons are classified based on the types of bonds between carbon atoms and their structural arrangement. Alkanes have single bonds, alkenes have at least one double bond, and alkynes have at least one triple bond. Cycloalkanes, cycloalkenes, and cycloalkynes are cyclic versions of these, while aromatic hydrocarbons contain conjugated pi electron systems, typically in ring structures like benzene.

Lewis Structures

Lewis structures are diagrams that represent the bonding between atoms of a molecule and the lone pairs of electrons that may exist. They help visualize the arrangement of atoms, the types of bonds (single, double, triple), and the presence of lone pairs, which are crucial for understanding molecular geometry and reactivity.

Structural Isomerism

Structural isomerism occurs when compounds have the same molecular formula but different structural arrangements of atoms. This concept is essential for identifying different types of hydrocarbons, as the arrangement of carbon atoms and the presence of functional groups like double or triple bonds can lead to different classifications and properties.

Watch next

Master Why we need functional groups. with a bite sized video explanation from Johnny

Start learning

Related Videos

Related Practice

Textbook Question

Draw a Lewis structure, and classify each of the following compounds. The possible classifications are as follows:

alcohol

ether

ketone

aldehyde

carboxylic acid

alkene

(f)

(g)

Textbook Question

Draw a Lewis structure, and classify each of the following compounds. The possible classifications are as follows: alcohol ether ketone aldehyde carboxylic acid alkene

(d) CH₃CH₂OCHCH₂

(e)

Textbook Question

Classify the following hydrocarbons, and draw a Lewis structure for each one. A compound may fit into more than one of the following classifications:

alkane

alkene

alkyne

cycloalkane

cycloalkene

cycloalkyne

aromatic

hydrocarbon