Intermolecular Forces and Phase Diagrams

Rank these in order of strength:
covalent bond
London forces
hydrogen bond
dipole-dipole attraction

• dipole-dipole>covalent bond>hydrogen bond>London
• London>dipole-diple>hydrogen bond>covalent bond
• covalent bond>hydrogen bond>dipole-dipole>London
• hydrogen bond>dipole-dipole>London>covalent bond

Tags

NGSS.HS-PS1-3

Which is the second strongest intermolecular force, after hydrogen bonding?

• dipole-dipole attraction
• London forces

What explains the very high melting and boiling point of water

• Strong dipole-dipole bonds between water molecules
• Strong hydrogen bonds between water molecules
• Dispersion forces which are present in all molecules
• Asymmetrical shape of the polar bonds.

Which of the following has hydrogen bonding?

• CBr₄

• NO₂

• H₂S

• NH₃

Does HF have hydrogen bonding?

• yes
• no

Does HCl have hydrogen bonding?

• yes
• no

Does CH₄ have hydrogen bonding?

• yes
• no

Which of these has ONLY London forces?

• I₂

• NH₃

• OCl₂

• SH₂

London forces are stronger in heavier atoms or molecules, and weaker in lighter atoms or molecules. Which of these has the strongest London forces?

• F₂

• Br₂

• I₂

• Cl₂

Tags

NGSS.HS-PS1-3

A substance capable of hydrogen bonding has a ___________ boiling point than a similar substance that doesn't hydrogen bond.

• higher
• lower