Question

question 3 (1 point)
the strongest type of intermolecular force in a sample of ch₃oh is _.
covalent
dipole
london
ionic
hydrogen bonding
question 4 (1 point)
what is the strongest type of intermolecular force present in ch₃f?
ion - dipole
dispersion
dipole - dipole
hydrogen bonding
none of the above

Explanation:

• Question 3:
• Covalent and ionic are intramolecular forces, not intermolecular.
• London forces (dispersion forces) are the weakest intermolecular forces.
• Dipole - dipole forces are weaker than hydrogen bonding when hydrogen bonding is present.
• Methanol (\(CH_3OH\)) has an \(O - H\) bond. Hydrogen bonding occurs when \(H\) is bonded to \(N\), \(O\), or \(F\). So, the strongest intermolecular force in \(CH_3OH\) is hydrogen bonding.
• Question 4:
• \(CH_3F\) is a polar molecule.
• Ion - dipole forces require ions (not present in \(CH_3F\) sample).
• Dispersion forces are present in all molecules but are weaker than dipole - dipole forces in polar molecules.
• Hydrogen bonding requires \(H\) to be bonded to \(N\), \(O\), or \(F\) (in \(CH_3F\), \(H\) is bonded to \(C\), not \(F\)).
• Since \(CH_3F\) is polar, the strongest intermolecular force is dipole - dipole.

Answer:

Question 3: hydrogen bonding
Question 4: dipole - dipole