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Which intermolecular force is dominant in a mixture of NH_3 and KCl?
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13. Liquids, Solids & Intermolecular Forces
Intermolecular Forces
Scelta multipla
Which of the following is the strongest type of intermolecular force that can exist between two molecules of water (H_2O)?
A
London dispersion forces
B
Dipole-dipole interactions
C
Hydrogen bonding
D
Ion-dipole interactions
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Identify the types of intermolecular forces listed: London dispersion forces, dipole-dipole interactions, hydrogen bonding, and ion-dipole interactions.
Recall that water (H\_2O) is a polar molecule with a bent shape, which means it has a permanent dipole moment.
Understand that London dispersion forces are weak forces present in all molecules but are the weakest among the options.
Recognize that dipole-dipole interactions occur between polar molecules, which water has, but these are generally weaker than hydrogen bonds.
Know that hydrogen bonding is a special, stronger type of dipole-dipole interaction that occurs when hydrogen is bonded to highly electronegative atoms like oxygen, nitrogen, or fluorine, which applies to water molecules.
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