Intermolecular Forces and Molecular Structure

The video tutorial explains intermolecular forces, focusing on CO2 and water interactions. It covers drawing Lewis diagrams for CO2 and water, analyzing their polarity, and understanding the resulting intermolecular forces. CO2 is non-polar, while water is polar, leading to a dipole-induced dipole interaction when they are combined.

Which of the following is NOT an intermolecular force?

• London forces

• Hydrogen bonding

• Covalent bonding

• Dipole-dipole interactions

In the Lewis structure of CO2, which atom is placed in the center?

• Oxygen

• Nitrogen

• Carbon

• Hydrogen

How many total valence electrons are present in a CO2 molecule?

• 8

• 12

• 16

• 20

What is the electronegativity of carbon in the context of CO2?

• 2.5

• 3.5

• 2.1

• 3.0

Why is CO2 considered a non-polar molecule?

• It has a symmetrical shape that cancels out dipole moments.

• It contains hydrogen bonds.

• It has lone pairs that create a net dipole moment.

• It has a high electronegativity difference between atoms.

In the Lewis structure of water, what is the shape of the molecule?

• Trigonal planar

• Linear

• Tetrahedral

• Bent

What causes water to have a net dipole moment?

• The presence of lone pairs on oxygen

• Symmetrical arrangement of atoms

• Its linear shape

• Equal distribution of electrons

What type of intermolecular force occurs between a polar and a non-polar molecule?

• Ion-dipole

• Dipole-induced dipole

• London dispersion

• Dipole-dipole

Which intermolecular force is present between two non-polar molecules?

• Hydrogen bonding

• London dispersion

• Dipole-dipole

• Ion-dipole

What is the intermolecular force between a polar molecule and an ion called?

• Dipole-induced dipole

• London dispersion

• Dipole-dipole

• Ion-dipole