Vapor Pressure and Intermolecular forces

Front

What are intermolecular forces?

Back

Intermolecular forces are the forces of attraction or repulsion between neighboring particles (molecules, atoms, or ions). They play a crucial role in determining the physical properties of substances.

Front

What type of intermolecular force is present in CO₂?

Back

Dispersion Force (also known as London dispersion forces) are the only intermolecular forces present in CO₂, as it is a nonpolar molecule.

Front

What does a high vapor pressure indicate about a substance's intermolecular forces?

Back

A high vapor pressure indicates that the substance has weak intermolecular forces.

Front

What is the boiling point of a substance at 80 kPa if it is ethanoic acid?

Back

The boiling point of ethanoic acid at 80 kPa is 111°C.

Front

Does CH₄ exhibit hydrogen bonding?

Back

No, CH₄ (methane) does not exhibit hydrogen bonding because it lacks a highly electronegative atom bonded to hydrogen.

Front

What happens to vapor pressure when temperature increases?

Back

When temperature increases, vapor pressure increases.

Front

Define vapor pressure.

Back

Vapor pressure is the pressure exerted by a vapor in equilibrium with its liquid or solid phase at a given temperature.

Front

What are the three main types of intermolecular forces?

Back

The three main types of intermolecular forces are dispersion forces, dipole-dipole interactions, and hydrogen bonding.

Front

How do strong intermolecular forces affect boiling point?

Back

Substances with strong intermolecular forces typically have higher boiling points due to the greater energy required to overcome these forces.

Front

What is the relationship between vapor pressure and temperature?

Back

Vapor pressure increases with temperature because more molecules have enough energy to escape the liquid phase.