Vapor Pressure Practice (Gases pg 22)

1. Using your knowledge of chemistry and the info in Ref Table H, which statement concerning propanone and water at 50°C is true? *vp= vapor pressure *imf= intermolecular forces

• propanone has a higher vp and stronger imf than water

• propanone has a higher vp and weaker imf than water

• propanone has a lower vp and stronger imf than water

• propanone has a lower vp and weaker imf than water

2. Which liquid has the highest vapor pressure at 75°C?

• ethanoic acid

• propanone

• ethanol

• water

3. What is the normal boiling point of ethanoic acid?

• 52°C

• 101.3°C

• 55°C

• 117.9°C

4. As the atmospheric pressure increases, the temperature at which water boils in an open vessel

• decreases

• increases

• remains the same

• smiles

5. The boiling point of a pure substance is defined as the temperature at which

• the kinetic energy of the molecules begins to increase

• the vapor pressure equals the external pressure

• the liquid phase can be completely evaporated

• the molecules of the substance break apart

Tags

NGSS.HS-PS3-2

6. When the vapor pressure of water is 30kPa, the temperature of the water is

• 20°C

• 70°C

• 40°C

• 100°C

7. Based on Reference Table H, which sample has the highest vapor pressure?

• water at 20°C

• ethanol at 50°C

• water at 80°C

• ethanol at 65°C

8. According to Reference Table H, what is the vapor pressure of propanone at 45°C?

• 22 kPa

• 70 kPa

• 33 kPa

• 98 kPa

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

• 28 ^oC

• 100^oC

• 111^oC

• 125^oC

Tags

NGSS.HS-PS3-4

Which model represents a LOWER Vapor Pressure?

• A

• B

Tags

NGSS.HS-PS3-4