Multiple Choice
Which of the following intermolecular forces occurs specifically between polar molecules?
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13. Liquids, Solids & Intermolecular Forces
Intermolecular Forces
Multiple Choice
Which is the strongest type of van der Waals force present between molecules of water (H_2O)?
A
London dispersion forces
B
Dipole-dipole interactions
C
Ion-dipole interactions
D
Hydrogen bonding
Verified step by step guidance1
Identify the types of van der Waals forces: London dispersion forces, dipole-dipole interactions, ion-dipole interactions, and hydrogen bonding (a special type of dipole-dipole interaction).
Recognize that water (H\_2O) is a polar molecule with a bent shape, leading to a permanent dipole moment.
Understand that hydrogen bonding occurs when hydrogen is covalently bonded to highly electronegative atoms like oxygen, nitrogen, or fluorine, creating a strong dipole-dipole attraction.
Compare the strengths: London dispersion forces are the weakest, dipole-dipole interactions are stronger, ion-dipole interactions involve ions (not present here), and hydrogen bonding is stronger than regular dipole-dipole forces.
Conclude that the strongest van der Waals force in water molecules is hydrogen bonding due to the presence of O-H bonds and the molecule's polarity.
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