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Multiple Choice
Which of the following substances most likely has the strongest intermolecular forces?
A
H\(_2\)O
B
N\(_2\)
C
CO\(_2\)
D
CH\(_4\)
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Verified step by step guidance
1
Identify the types of intermolecular forces present in each substance: N\(_2\), CO\(_2\), CH\(_4\), and H\(_2\)O. These forces can include London dispersion forces, dipole-dipole interactions, and hydrogen bonding.
Recognize that N\(_2\) and CO\(_2\) are nonpolar molecules, so their intermolecular forces are primarily London dispersion forces, which are generally weaker.
Note that CH\(_4\) is also nonpolar and experiences only London dispersion forces, similar to N\(_2\) and CO\(_2\).
Understand that H\(_2\)O is a polar molecule with a bent shape, allowing it to form hydrogen bonds, which are significantly stronger than London dispersion forces or dipole-dipole interactions.
Conclude that because hydrogen bonding is the strongest type of intermolecular force among the options, H\(_2\)O most likely has the strongest intermolecular forces.