Polarity and Intermolecular Forces

Which substance has the weakest intermolecular forces?

• Substance A, boiling point of 75 °C

• Substance B, boiling point of 105 °C

• Substance C, boiling point of 25 °C

• Substance d, boiling point of 45 °C

Tags

NGSS.HS-PS1-3

The intermolecular force present in all matter is

• Hydrogen Bonding

• Ionic Bonding

• Dipole-Dipole

• London or Dispersion

The strongest IMF is

• London/Dispersion

• Dipole-Dipole

• Hydrogen Bonding

The properties affected by the IMF's are:

• Boiling Point

• Melting Point

• Surface Tension

• all 3 are affected by IMF

Which of the following has the lowest boiling point?

• PH₃

• H₂O

• SiH₄

• NH₃

Which of the following statements correctly explains why hydrogen bonding is such a strong intermolecular force?

• There is an attraction between a small, weakly electronegative hydrogen atom and a large, strongly electronegative atom of fluorine, nitrogen, or oxygen

• There is an attraction between a small, highly electronegative hydrogen atom and a large, highly electronegative fluorine atom

• There is an attraction between the hydrogen and oxygen atoms, only

• There is an attraction between the hydrogen and nitrogen atoms, only

Tags

NGSS.HS-PS1-3

Which type of IMF is responsible for the attraction pictured above?

• Dipole-Dipole Interaction

• Ion-Dipole Interaction

• Hydrogen Bonds

• Covalent Bond

• Ionic Bond

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 substance has the weakest intermolecular forces?

• Substance A, boiling point of 75 °C

• Substance B, boiling point of 105 °C

• Substance C, boiling point of 25 °C

• Substance d, boiling point of 45 °C

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