Vapor Pressure Quiz

Factors affecting vapor pressure: What are the three main factors that affect vapor pressure?

• Density, mass, and weight

• Temperature, intermolecular forces, and surface area

• Velocity, acceleration, and force

• Color, pressure, and volume

Factors affecting vapor pressure: How does intermolecular forces affect vapor pressure?

• Intermolecular forces have no effect on vapor pressure

• Intermolecular forces only affect the color of the substance, not the vapor pressure

• Intermolecular forces increase the boiling point, not the vapor pressure

• Intermolecular forces affect vapor pressure by determining how easily molecules can escape from the liquid phase into the vapor phase.

Factors affecting vapor pressure: Explain the relationship between temperature and vapor pressure.

• No relationship

• Directly proportional

• Indirectly proportional

• Randomly fluctuating

Calculating vapor pressure: If the temperature is 25°C and the vapor pressure of a substance is 50 mmHg, what is the vapor pressure at 35°C?

• 68 mmHg

• 25 mmHg

• 40 mmHg

• 80 mmHg

Calculating vapor pressure: How does the presence of impurities affect the calculation of vapor pressure?

• The presence of impurities stabilizes the vapor pressure

• The presence of impurities lowers the vapor pressure

• The presence of impurities has no effect on the vapor pressure

• The presence of impurities increases the vapor pressure

Vapor pressure and boiling point: How does vapor pressure relate to the boiling point of a substance?

• The higher the boiling point of a substance, the lower its vapor pressure.

• As the vapor pressure of a substance increases, its boiling point also increases.

• Vapor pressure has no effect on the boiling point of a substance.

• As the vapor pressure of a substance increases, its boiling point decreases.

Vapor pressure and boiling point: Give an example of a substance with a high vapor pressure and low boiling point.

• Acetone

• Methanol

• Ethanol

• Water

Vapor pressure and temperature: How does vapor pressure change with an increase in temperature?

• Vapor pressure has no relationship with temperature.

• Vapor pressure remains constant with an increase in temperature.

• Vapor pressure decreases with an increase in temperature.

• Vapor pressure increases with an increase in temperature.

Vapor pressure and temperature: What is the effect of temperature on the equilibrium between liquid and vapor phases?

• Equilibrium vapor pressure decreases with increasing temperature.

• Higher temperature increases the equilibrium vapor pressure.

• Lower temperature increases the equilibrium vapor pressure.

• Temperature has no effect on the equilibrium vapor pressure.