Multiple Choice
Which of the following molecules will experience hydrogen bonding with like molecules?
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13. Liquids, Solids & Intermolecular Forces
Intermolecular Forces
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Which type(s) of intermolecular forces are present between H_2O molecules?
A
Only dipole-dipole interactions
B
Only hydrogen bonding
C
Hydrogen bonding, dipole-dipole interactions, and London dispersion forces
D
Only London dispersion forces
Verified step by step guidance1
Identify the types of intermolecular forces that can exist between molecules. The main types are London dispersion forces, dipole-dipole interactions, and hydrogen bonding.
Recognize that water (H_2O) is a polar molecule because of the difference in electronegativity between hydrogen and oxygen and its bent molecular shape, which creates a permanent dipole moment.
Understand that because water is polar, dipole-dipole interactions occur between the positive end (hydrogen) of one molecule and the negative end (oxygen) of another molecule.
Note that water molecules contain hydrogen atoms bonded directly to a highly electronegative atom (oxygen), which allows for hydrogen bonding, a special and stronger type of dipole-dipole interaction.
Remember that all molecules, including water, exhibit London dispersion forces due to temporary fluctuations in electron density, so these forces are also present alongside dipole-dipole and hydrogen bonding.
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