Question

Which of the following molecules can hydrogen-bond among themselves in pure samples of bulk material? (a) methanol $\left(\mathrm{CH}_{3} \mathrm{OH}\right) ;$ (b) ethane $\left(\mathrm{CH}_{3} \mathrm{CH}_{3}\right) ;$ (c) dimethyl cther $\left(\mathrm{CH}_{3} \mathrm{OCH}_{3}\right) ;$ (d) acctic acid $\left(\mathrm{CH}_{3} \mathrm{COOH}\right)$

Name: Problem 41, Chapter 6: Chemistry: An Atoms-Focused Approach
Uploaded: 2020-08-30T19:10:24-08:00
Duration: 1 min 45 s
Channel: Will Li
Description: Which of the following molecules can hydrogen-bond among themselves in pure samples of bulk material? (a) methanol (CH3 OH) ; (b) ethane (CH3 CH3) ; (c) dimethyl cther (CH3 OCH3) ; (d) acctic acid (CH3 COOH)

   Which of the following molecules can hydrogen-bond among themselves in pure samples of bulk material?
(a) methanol $\left(\mathrm{CH}_{3} \mathrm{OH}\right) ;$ (b) ethane $\left(\mathrm{CH}_{3} \mathrm{CH}_{3}\right) ;$ (c) dimethyl cther $\left(\mathrm{CH}_{3} \mathrm{OCH}_{3}\right) ;$ (d) acctic acid $\left(\mathrm{CH}_{3} \mathrm{COOH}\right)$

Chemistry: An Atoms-Focused Approach

Thomas R. Gilbert,… 2nd Edition

Chapter 6, Problem 41

Instant Answer

Solved by Expert Will Li

08/30/2020

Step 1

The molecule must have a hydrogen atom bonded to a fluorine, oxygen, or nitrogen atom (F, O, or N). Additionally, there must be a lone pair on a different F, O, or N atom. Show more…

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Which of the following molecules can hydrogen-bond among themselves in pure samples of bulk material? (a) methanol $\left(\mathrm{CH}_{3} \mathrm{OH}\right) ;$ (b) ethane $\left(\mathrm{CH}_{3} \mathrm{CH}_{3}\right) ;$ (c) dimethyl cther $\left(\mathrm{CH}_{3} \mathrm{OCH}_{3}\right) ;$ (d) acctic acid $\left(\mathrm{CH}_{3} \mathrm{COOH}\right)$

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Key Concepts

Hydrogen Bonding

Hydrogen bonding is a strong type of dipole-dipole intermolecular interaction that occurs when a hydrogen atom covalently bonded to a highly electronegative atom (typically oxygen, nitrogen, or fluorine) is attracted to a lone pair of electrons on a nearby electronegative atom. This type of bonding is crucial in determining many physical properties of substances, such as boiling points, solubility, and crystallinity.

Role of Functional Groups in Hydrogen Bond Formation

The ability of a molecule to engage in hydrogen bonding is heavily dependent on its functional groups. Groups like hydroxyl (-OH) and carboxyl (-COOH) contain both a hydrogen atom bonded to an electronegative atom and lone pairs available for interaction, enabling them to participate as hydrogen bond donors and acceptors. This contrasts with molecules lacking such groups, which generally cannot form hydrogen bonds in bulk.

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