Boiling and Vapor Pressure

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

• 28 ^oC

• 100^oC

• 111^oC

• 125^oC

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

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

• higher

• lower

Tags

NGSS.HS-PS1-3

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

• ethanoic acid

• ethanol

• propanone

• water

Liquids with weak intermolecular forces

• contain a lot of kinetic energy

• easily evaporate

• cannot diffuse

• freeze easily

• are probably volatile

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-2

Which line segment represents the heat of vaporization (ΔH_vap)?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What is the boiling point of this substance?

• 20°C

• 50°C

• 110°C

• 170°C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the normal boiling point of water

• 0^oC

• 100^oF

• 50^oC

• 100^oC

Tags

NGSS.MS-PS1-4

What is vapor pressure?

• the force of the gas above a liquid

• the force of a gas below a liquid

• the force of a liquid below a gas

• boiling point

• evaporation

Why do sealed jars with liquid in them reach equilibrium?

• evaporation rates equal condensation rates

• all the liquid evaporates

• all the liquid condenses

• there is an equal amount of liquid and gas

• they do no not reach equilibrium

Tags

NGSS.HS-PS3-4