Intermolecular Forces and Properties
Which of the following is an intermolecular force?
Covalent bond
Metallic bond
Hydrogen bond
Ionic bond
Which type of intermolecular force is present in all substances?
Dipole-dipole forces
Hydrogen bonding
London dispersion forces
Ion-dipole forces
Which of the following molecules exhibits dipole-dipole forces?
Explain why n-pentane has a higher boiling point than neopentane, even though they have the same molecular formula.
n-pentane has stronger dipole-dipole forces.
n-pentane has stronger hydrogen bonds.
n-pentane has a more linear shape, allowing for greater London Dispersion Forces.
Neopentane has a more linear shape, allowing for greater London Dispersion Forces.
Which molecule, or , would exhibit stronger dipole-dipole forces and why?
because chlorine is more electronegative than bromine.
because bromine is more electronegative than chlorine.
Both have equal dipole-dipole forces because they are both halogens.
Neither exhibits dipole-dipole forces.
Given the boiling points of butane and acetone, explain the difference based on intermolecular forces.
Butane has stronger hydrogen bonds.
Acetone has stronger London Dispersion Forces.
Acetone has dipole-dipole forces, while butane only has London Dispersion Forces.
Butane only has dipole-dipole forces.
Which molecule, or , would exhibit stronger London Dispersion Forces and why?
because it is smaller.
because it has more electrons and is more polarizable.
because it is more polarizable.
Both have equal LDFs because they are both hydrocarbons.

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Which of the following can form hydrogen bonds?
Describe the interactions between ions and water molecules when dissolves in water.
ions are attracted to the negative oxygen end of water molecules.
ions are repelled by the negative oxygen end of water molecules.
ions are attracted to the positive hydrogen end of water molecules.
There is no interaction between ions and water molecules.
What type of attraction holds ions together in a crystal?
Dipole-dipole forces
Hydrogen bonding
Ion-ion attractions
London dispersion forces