Multiple Choice
The dominant forces between molecules (intermolecular forces) are ____ in origin.
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12. Liquids, Solids, and Intermolecular Forces
Intermolecular Forces (Simplified)
Multiple Choice
Which compound has the strongest intermolecular forces (IMFs) among the following substances?
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Verified step by step guidance1
Identify the molecular formulas of the given substances: carbon dioxide (CO\_2), ethane (C\_2H\_6), hydrogen gas (H\_2), and water (H\_2O).
Recall the types of intermolecular forces (IMFs) that can occur: London dispersion forces, dipole-dipole interactions, and hydrogen bonding. Hydrogen bonding is the strongest among these.
Analyze each molecule's polarity and ability to hydrogen bond: CO\_2 is nonpolar with only London dispersion forces; C\_2H\_6 is nonpolar with London dispersion forces; H\_2 is nonpolar with London dispersion forces; H\_2O is polar and can form hydrogen bonds due to the presence of highly electronegative oxygen bonded to hydrogen.
Compare the strength of IMFs: since hydrogen bonding is stronger than dipole-dipole and London dispersion forces, H\_2O has the strongest intermolecular forces among the listed substances.
Conclude that the compound with the strongest IMFs is the one capable of hydrogen bonding, which is H\_2O.
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