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Chapter 27: Problem 13

In the alkanes: a) what type(s) of intermolecular force is (are) present? b) what is the strongest intermolecular force present?

Short Answer

Expert verified
a) The type of intermolecular force present in alkanes is London dispersion forces. b) The strongest intermolecular force present in alkanes is also the London dispersion force.

Step by step solution

01

Understanding Alkanes

Alkanes are hydrocarbons, meaning they are compounds composed solely of carbon (C) and hydrogen (H) atoms. Compounds of carbon and hydrogen have nonpolar covalent bonds. Which means electrons are shared evenly between the C and H atoms.
02

Identify the type of Intermolecular Forces in Alkanes

The type of intermolecular forces that occur between molecules of a substance depend on the type of molecules involved. In case of alkanes, since they are nonpolar molecules, the only intermolecular force present is the London dispersion force.
03

Identify the strongest Intermolecular Force

London dispersion forces are the weakest of all the intermolecular forces. However, in a nonpolar molecule like alkanes, where there are no dipole-dipole interactions or hydrogen bonds, London dispersion forces become the strongest intermolecular force by default.

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Most popular questions from this chapter

Find an alkane, a ketone, and an alcohol with roughly the same MW (within 5 \(\mathrm{g} / \mathrm{mole}\) ). Rank these compounds in terms of relative boiling points.

Is the strength of intermolecular forces determined by the bond strengths within the individual molecules? Explain your reasoning.

What is the difference between intramolecular bonds and intermolecular forces?

For each type of compound below, indicate how the boiling point changes as the molecular weight of the compound increases: a) alkane b) ketone c) \(\quad\) alcohol

Rank these intermolecular forces in terms of their typical relative strengths: hydrogen bonding; dipole-dipole; induced dipole-induced dipole.
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