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- 1. Multiple Choice
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. Multiple Choice
2. Which liquid has the highest vapor pressure at 75°C?
ethanoic acid
propanone
ethanol
water
- 3. Multiple Choice
3. What is the normal boiling point of ethanoic acid?
52°C
101.3°C
55°C
117.9°C
- 4. Multiple Choice
4. As the atmospheric pressure increases, the temperature at which water boils in an open vessel
decreases
increases
remains the same
smiles
- 5. Multiple Choice
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
- 6. Multiple Choice
6. When the vapor pressure of water is 30kPa, the temperature of the water is
20°C
70°C
40°C
100°C
- 7. Multiple Choice
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. Multiple Choice
8. According to Reference Table H, what is the vapor pressure of propanone at 45°C?
22 kPa
70 kPa
33 kPa
98 kPa
- 9. Multiple Choice
According to the reference table, what is the boiling point of ethanoic acid at 80 kPa?
28 oC
100oC
111oC
125oC
- 10. Multiple Choice
Which model represents a LOWER Vapor Pressure?
A
B
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