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In each pair of compounds, which compound has the higher

Organic Chemistry | 8th Edition | ISBN: 9780321768414 | Authors: L.G. Wade Jr ISBN: 9780321768414 33

Solution for problem 40SP Chapter 3

Organic Chemistry | 8th Edition

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Organic Chemistry | 8th Edition | ISBN: 9780321768414 | Authors: L.G. Wade Jr

Organic Chemistry | 8th Edition

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Problem 40SP

In each pair of compounds, which compound has the higher boiling point? Explain your reasoning.

(a) octane or 2,2,3-trimethylpentane

(b) nonane or 2-methylheptane

(c) 2,2,5-trimethylhexane or nonane

Step-by-Step Solution:
Step 1 of 3

Solution 40SP

 The boiling points increase smoothly with increasing numbers of carbon atoms and increasing molecular weights. Larger molecules have larger surface areas, resulting in increased intermolecular Van der Waals attractions. These increased attractions must be overcome for vaporization and boiling to occur. Thus, a larger molecule, with greater surface area and greater Van der Waals attractions, boils at a higher temperature.

Both octane and 2,2,3-trimethylpentane have same molecular formula

Octane has larger surface area than 2,2, 3-trimethylpentane. Thus increases Van der Waal interactions. Hence, octane has the higher boiling point than 2,2, 3-trimethylpentane.

b) The dispersion force increases with increasing molar mass because molecules or atoms of higher molar mass generally have more electrons dispersed over a greater volume.

Molar mass of 2-methylnonane (142.17 /mol)...

Step 2 of 3

Chapter 3, Problem 40SP is Solved
Step 3 of 3

Textbook: Organic Chemistry
Edition: 8
Author: L.G. Wade Jr
ISBN: 9780321768414

This full solution covers the following key subjects: trimethylpentane, trimethylhexane, nonane, explain, higher. This expansive textbook survival guide covers 25 chapters, and 1336 solutions. The answer to “In each pair of compounds, which compound has the higher boiling point? Explain your reasoning.(a) octane or 2,2,3-trimethylpentane(b) nonane or 2-methylheptane(c) 2,2,5-trimethylhexane or nonane” is broken down into a number of easy to follow steps, and 24 words. This textbook survival guide was created for the textbook: Organic Chemistry, edition: 8. The full step-by-step solution to problem: 40SP from chapter: 3 was answered by , our top Chemistry solution expert on 05/06/17, 06:41PM. Organic Chemistry was written by and is associated to the ISBN: 9780321768414. Since the solution to 40SP from 3 chapter was answered, more than 317 students have viewed the full step-by-step answer.

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