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Worksheet 27: Vapor pressure . Topic 7

Set A: Terms, definitions and facts Objective: By defining these words and answering questions
below, you should become more familiar with facts
and terms related to vapor pressure.
Define, neatly and clearly, the following vapor pressure related terms.
1. Vapor

2. Vapor pressure

3. Boiling

4. Boiling points
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Answer questions below.
5. Vapor pressure of a liquid depends on what factor? Need help? Study Book pg 157 - 158 Set 26 - 28

6. Which of the four liquids on Table H has the weakest intermolecular forces between its molecules?

7. Which of the four liquids on Table H has the strongest intermolecular forces between its molecules?

o
8. Explain why water boils at 100 C at normal atmospheric pressure.

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Set B: Vapor pressure and temperature Objective: To test your ability to use Reference Table H
to answer questions relating temperature
to vapor pressure

Use Reference Table H
Determine vapor pressure of the substances at the given temperature. o
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9. Propanone at 30 C ____________ 11. Ethanoic acid at 115 C _______________
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10. Water at 75 C _____________ 12. Ethanol at 58 C ______________

Determine the boiling point of each substance at the given atmospheric pressure.

13. Propanone at 50 kPa _________ 15. Ethanoic acid at 80 kPa ____________

14. Water at 120 kPa ____________ 16. Ethanol at 60 kPa __________ Need help? Study Book pg 158 Set 28

Determine the normal boiling point of each substance below.

17. Propanone _________ 19. Water _______________

18. Ethanol __________ 20. Ethanoic acid ____________

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