Organic Chemistry 5th Edition by Smith – Test Bank

1. Which of the following statements about alkanes is not true?

1. Alkanes are aliphatic hydrocarbons.
2. Alkanes contain only C-C and C-H s bonds.
3. Alkanes are acyclic or cyclic.
4. Acyclic alkanes have two fewer H atoms than cyclic alkanes with the same number of carbons.

2. Which of the following statements about alkanes is true?

1. Alkanes are aliphatic hydrocarbons having only C-C and C-H p bonds.
2. Cyclic alkanes have two fewer H atoms than acyclic alkanes with the same number of carbons.
3. Acyclic alkanes contain carbons joined in one or more rings.

D.

Acyclic alkanes have the general molecular formula CnH2n.

3. What is the molecular formula of an alkane that has twenty-three carbon atoms?

1. C23H46
2. C H

   23 48

3. C23H50
4. C23H44

Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand

Difficulty: Easy Gradable: automatic Section: 04.01 Subtopic: Acyclic vs cyclic

Topic: Alkanes (Acyclic and Cyclic)

Accessibility: Keyboard Navigation Bloom’s Level: 3. Apply Difficulty: Easy Gradable: automatic

Section: 04.01 Subtopic: Acyclic vs cyclic

Topic: Alkanes (Acyclic and Cyclic)

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Accessibility: Keyboard Navigation Bloom’s Level: 2. Understand

Difficulty: Easy Gradable: automatic Section: 04.01 Subtopic: Acyclic vs cyclic

Topic: Alkanes (Acyclic and Cyclic)

4. What is the molecular formula of a cycloalkane that has six carbon atoms?

1. C6H14
2. C6H10
3. C6H12
4. C6H16

5. What is the approximate C-C-C bond angle in propane?

1. 90°
2. 109.5°
3. 120°
4. 180°

6. What is the hybridization of a carbon atom in an alkane?

Accessibility: Keyboard Navigation Bloom’s Level: 3. Apply Difficulty: Easy Gradable: automatic

Section: 04.02 Subtopic: Acyclic vs cyclic

Topic: Alkanes (Acyclic and Cyclic)

Accessibility: Keyboard Navigation Bloom’s Level: 3. Apply Difficulty: Easy Gradable: automatic

Section: 04.01 Subtopic: Acyclic vs cyclic

Topic: Alkanes (Acyclic and Cyclic)

Accessibility: Keyboard Navigation Bloom’s Level: 3. Apply Difficulty: Easy Gradable: automatic

Section: 04.01 Subtopic: Acyclic vs cyclic

Topic: Alkanes (Acyclic and Cyclic)

Accessibility: Keyboard Navigation Bloom’s Level: 3. Apply Difficulty: Easy Gradable: automatic

Section: 04.01 Subtopic: Acyclic vs cyclic

Topic: Alkanes (Acyclic and Cyclic)

A. sp3

2. sp2
3. sp
4. p

7. How many constitutional isomers are there with the molecular formula C5H12?

1. 2
2. 3
3. 4
4. 5

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8. How many constitutional isomers are there with the molecular formula C6H14?

1. 2
2. 3
3. 4
4. 5

   Which of the following is not another representation for 2-methylbutane?

Accessibility: Keyboard Navigation Bloom’s Level: 3. Apply Difficulty: Easy Gradable: automatic Section: 04.01 Subtopic: Acyclic vs cyclic Topic: Alkanes (Acyclic and Cyclic)

9.

1. I
2. II
3. III
4. IV

10. Which of the following compounds has primary, secondary, tertiary, and quaternary carbon atoms?

A. Pentane
B. 2-Methylpentane
C. 2,2-Dimethylpentane D. 2,2,3-Trimethylpentane

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Bloom’s Level: 3. Apply Difficulty: Easy

Gradable: automatic Section: 04.01

Subtopic: Acyclic vs cyclic Topic: Alkanes (Acyclic and Cyclic)

Accessibility: Keyboard Navigation Bloom’s Level: 3. Apply Difficulty: Easy Gradable: automatic

Section: 04.04 Subtopic: Acyclic vs cyclic

Subtopic: IUPAC Nomenclature of acyclic alkanes Topic: Alkanes (Acyclic and Cyclic)