Multiple Choice
Which statement about van der Waals forces is true?
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13. Liquids, Solids & Intermolecular Forces
Intermolecular Forces
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Which substance below has the strongest intermolecular forces?
A
N2
B
H2O
C
CH4
D
CO2
Verified step by step guidance1
Identify the types of intermolecular forces present in each substance: N\_2, H\_2O, CH\_4, and CO\_2.
Recall that N\_2, CH\_4, and CO\_2 are nonpolar molecules, so their primary intermolecular forces are London dispersion forces, which are generally weaker.
Recognize that H\_2O is a polar molecule capable of hydrogen bonding, a strong type of dipole-dipole interaction that occurs when hydrogen is bonded to highly electronegative atoms like oxygen.
Compare the strength of hydrogen bonding in H\_2O to the London dispersion forces in the other molecules, noting that hydrogen bonding is significantly stronger.
Conclude that H\_2O has the strongest intermolecular forces among the given substances due to its ability to form hydrogen bonds.
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