Regents
Name:________________________
Chemistry
Date:_________________
Mr. Grodski III
Goblin Gas Pressure
1. Define the following terms:
a. vapor pressure –
b. boiling point –
c. normal boiling point2. How are vapor pressure and temperature related?
3. How are atmospheric pressure and boiling points related?
4. Why does the vapor pressure of a liquid increase as the temperature increases?
Table H
5. If the atmospheric pressure is 30 kPa, what temperature will the water boil at?
9. If the atmospheric pressure is 200 kPa, what temperature will the water boil at?
10. If water boils at 70°C, what must be the atmospheric pressure?
11. What is the vapor pressure of ethanol at its normal boiling point?
12. What is the vapor pressure of cyclohexane at its normal boiling point?
13. If gas is collected over water and the barometric pressure on this day is 770 mm Hg,
what is the partial pressure of the oxygen gas if the gas collected is a 50% mixture of
O2(g) and N2(g).
Regents
Name:________________________
Chemistry
Date:_________________
Mr. Grodski III
Gargoil Goblin Vapor Pressure
Given the following graph answer the following questions
Standard pressure
1 atm, 760 mm Hg
760 torr
101.3 Kpa
1. Which liquid has the highest vapor pressure?
2. Which liquid has the lowest boiling point?
3. Which liquid has the weakest intermolecular attractions?
4. Which liquid has the lowest vapor pressure?
5. Which liquid has the highest boiling point?
6. Which liquid has the strongest intermolecular attractions?
7. Which liquid is the most volatile?
8. Which liquid has the highest heat of vaporization? Remember that Hv is the heat
required to be absorbed to change a liquid to gas….
9. Evaporation is endothermic or exothermic?
10. What is the normal boiling point of liquid A?
11. What is the vapor pressure of any liquid at its normal boiling point?
12. Sublimation is the phase change from the solid phase directly to the gas phase. What
can you say about a solids intermolecular attractions and vapor pressure if it
sublimes?
13. How are vapor pressures, boiling points, and intermolecular attractions interrelated?