Vapor Pressure Avogadro Practice Questions

What is the vapor pressure of propanone at 50C?

• 37 kPa

• 50 kPa

• 83 kPa

• 101 kPa

Which compound has the lowest vapor pressure at 50C?

• propanone

• ethanoic acid

• water

• ethanol

Using your knowledge of chemistry and the information in Reference Table H, which statement concerning propanone and water at 50 C is true?

• Propanone has a higher vapor pressure and stronger intermolecular forces than water.

• Propanone has a higher vapor pressure and weaker intermolecular forces than water.

• Propanone has a lower vapor pressure and stronger intermolecular forces than water.

• Propanone has a lower vapor pressure and weaker intermolecular forces than water.

Which sample at STP has the same number of atoms as 18 liters of Ne(g) at STP?

• 18 moles of Ar (g)

• 18 liters of Ar(g)

• 18 gramos of H₂O(g)

• 18 mL of H₂O (g)

During which two processes does a substance release energy?

• freezing and condensation

• freezing and melting

• evaporation and condensation

• evaporating and melting

What is the boiling point of this substance?

• 32^oC

• 54^oC

• 62^oC

• 100^oC

During which interval is the substance completely in the liquid phase?

• AB

• BC

• CD

• DE

Solid and liquid phases can exist in equilibrium between points

• E and F

• B and C

• C and D

• D and E

Between which times could the heat of fusion be determined?

• A and B

• B and C

• C and D

• E and F

What is the total length of time that the solid phase existed with the liquid phase?

• 6 min

• 10 min

• 8 min

• 4 min