Multiple Choice
In which of the following pure compounds would intermolecular hydrogen bonding be expected?
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13. Liquids, Solids & Intermolecular Forces
Intermolecular Forces
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Which statement best describes the difference between intermolecular and intramolecular forces?
A
Intermolecular forces are always stronger than intramolecular forces.
B
Intermolecular forces occur between molecules, while intramolecular forces occur within a molecule.
C
Intramolecular forces are responsible for phase changes, while intermolecular forces hold atoms together in a molecule.
D
Intermolecular forces only exist in ionic compounds, while intramolecular forces exist in covalent compounds.
Verified step by step guidance1
Step 1: Understand the definitions of intermolecular and intramolecular forces. Intermolecular forces are forces that act between separate molecules, while intramolecular forces are forces that hold atoms together within a single molecule.
Step 2: Recognize that intramolecular forces (such as covalent bonds, ionic bonds, and metallic bonds) are generally much stronger than intermolecular forces (such as hydrogen bonding, dipole-dipole interactions, and London dispersion forces).
Step 3: Note that intermolecular forces influence physical properties like boiling and melting points because they affect how molecules interact with each other in different phases.
Step 4: Understand that intramolecular forces are responsible for the chemical identity of a molecule, holding atoms together to form the molecule itself.
Step 5: Evaluate the given statements based on these concepts to identify the correct description: the key difference is that intermolecular forces occur between molecules, while intramolecular forces occur within a molecule.
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