Multiple Choice
Which type of intermolecular force is primarily responsible for the attraction between molecules of hydrogen chloride (HCl)?
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13. Liquids, Solids & Intermolecular Forces
Intermolecular Forces
Multiple Choice
Which type of intermolecular force is the strongest between molecules of CH3Cl?
A
London dispersion forces
B
Dipole-dipole interactions
C
Hydrogen bonding
D
Ion-dipole interactions
Verified step by step guidance1
Identify the molecular structure of CH\_3Cl (chloromethane). It consists of a methyl group (CH\_3) bonded to a chlorine atom.
Determine the polarity of the molecule. Since chlorine is more electronegative than carbon and hydrogen, the C-Cl bond is polar, making CH\_3Cl a polar molecule with a permanent dipole moment.
Review the types of intermolecular forces: London dispersion forces (present in all molecules), dipole-dipole interactions (between polar molecules), hydrogen bonding (requires H bonded to N, O, or F), and ion-dipole interactions (between ions and polar molecules).
Since CH\_3Cl is polar but does not have hydrogen bonded to N, O, or F, hydrogen bonding is not possible. Also, there are no ions present, so ion-dipole interactions do not apply.
Conclude that the strongest intermolecular force between CH\_3Cl molecules is dipole-dipole interactions, which are stronger than London dispersion forces for this molecule.
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