HW #13: Vapor Pressure and Table H

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

The weaker the intermolecular forces of a substance the _____________ the boiling point

• higher

• lower

Liquids with weak intermolecular forces

• contain a lot of kinetic energy
• easily evaporate
• cannot diffuse
• freeze easily

Tags

NGSS.HS-PS1-3

According to the reference table, what is the boiling point of ethanoic acid at 80 kPa?

• 28 ^oC

• 100^oC

• 111^oC

• 125^oC

Which liquid has the highest vapor pressure at 75^oC?

• ethanoic acid

• ethanol

• propanone

• water

At which temperature is the vapor pressure of ethanol equal to the vapor pressure of propanone at 35^oC?

• 35^oC

• 60^oC

• 82^oC

• 95^oC

At which temperature is the vapor pressure of ethanol equal to 80 kPa? Use Table H.

• 48^oC

• 73^oC

• 80^oC

• 101^oC

Which compound has the lowest vapor pressure at 50°C? Use Table H.

• ethanoic acid

• ethanol

• propanone

• water

When the vapor pressure of water is 70 kPa the temperature of the water is

• 20^oC

• 40^oC

• 60^oC

• 91^oC

What is the vapor pressure of propanone at 50^oC?

• 37 kPa

• 50 kPa

• 83 kPa

• 101 kPa

Tags

NGSS.HS-PS3-4