Multiple Choice
Which condition must be met for dipole-dipole forces to exist between two molecules?
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13. Liquids, Solids & Intermolecular Forces
Intermolecular Forces
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Which of the following compounds would have the strongest intermolecular forces?
A
CH\(_4\)
B
N\(_2\)
C
H\(_2\)O
D
CO\(_2\)
Verified step by step guidance1
Identify the types of intermolecular forces present in each compound: CH\(_4\), N\(_2\), H\(_2\)O, and CO\(_2\).
Recall that CH\(_4\) and CO\(_2\) are nonpolar molecules, so their intermolecular forces are primarily London dispersion forces.
Note that N\(_2\) is also nonpolar and exhibits only London dispersion forces, which are generally weak.
Recognize that H\(_2\)O is a polar molecule capable of hydrogen bonding, a much stronger intermolecular force than dispersion forces.
Conclude that because hydrogen bonding is stronger than London dispersion forces, H\(_2\)O has the strongest intermolecular forces among the given compounds.
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