Acc. Chemistry Chapter 11 Worksheet #1 Name ______

(Boyle’s Law)

1. A sample of gas occupies 1000.0 mL at a pressure of 500.0 torr. If the temperature remains constant, what will be the volume of the gas at 800.0 torr?

2. A sample of gas occupies 500.0 L at a pressure of 1520 mm Hg. If the temperature doesn’t change, what volume will the sample occupy at standard pressure?

3. One mole of gas at 1.00 atm and 25.0 Co occupies 24.6 liters. What will be the volume of the gas at 298 K and a pressure of 1000.0 torr?

4. A sample of gas occupies 1220 mL at an unknown pressure. If the pressure is changed to 3.0 atm, the volume is reduced to 610 mL. What was the original pressure?

5. If a balloon takes up a certain amount of space at standard pressure, what is the new pressure if the balloon is put in a vacuum that allows the balloon to expand to 10 x its previous size?

Acc. Chemistry Chapter 11 Worksheet #2 Name ______

(Charles’ Law and Gay-Lussac’s Law)

1. A 1.50 L sample of gas at STP is heated to 50.0 Co. If the volume remains constant, what does the pressure become?

2. What temperature is required to increase the pressure of a 250 mL sample of gas at 20.0 Co and 1.0 atm, to 1.5 atm if the volume remains constant?

3. A 3.0 mole sample of gas at STP is heated inside a rigid metal container. If the final temperature of the gas is 50.0 Co, what will be the new pressure?

4. A 500.0 ft3 sample of gas at STP is cooled until the volume is 400.0 ft3. If pressure remains constant, what will the new temperature be?

5. A 1.0 mole sample of gas at STP is heated to 25.0 Co. If the volume remained constant, what is the new pressure?

Acc. Chemistry Chapter 11 Worksheet #3 Name ______

1. A balloon containing Nitrogen occupies 400.0 cm3 at STP. If the pressure is quadrupled, what will the new volume be assuming constant temperature?

2. A cubic foot of gas exerts a pressure of 25 lbs/ft2 at 400.0 K. What pressure will the gas exert at a temperature of 250 K assuming the container does not change in size?

3. If 500.0 mL of methane at STP is heated to 20.0 Co and the pressure is constant, what will be the new volume in cm3?

4. During an investigation, 22.4 L of Oxygen is collected at a temperature of 293 K and a pressure of 750 mm Hg. What volume will the gas occupy at STP?

5. During another investigation 1000.0 mL of Hydrogen is collected at STP. What volume will the gas occupy at a temperature of –10.0 Co and a pressure of 0.850 atm?

6. A 200.0 mL sample of Hydrogen is collected at 800.0 torr and 0 Co. What volume will the gas occupy at 1.00 atm and a temperature of 27.0 Co?

Acc. Chemistry Chapter 11 Worksheet #4 Name ______

1. A 2.00 L sample of gas collected at STP is heated to 75.0 Co at a constant pressure. What will the new volume be?

2. A 2.00 L sample of gas collected at 300.0 K and 0.850 atm is changed to STP. What will be the new volume?

3. What pressure is exerted by 1200.0 cm3 of gas at STP if it is cooled (the temperature drops 20.0 Co) and the volume of the container is unchanged?

4. What pressure is required to compress a 1.00 mole sample of a gas at STP if it is cooled to 223 K and the final volume is 15.0 L?

5. If a gas is collected over water at 20.0 degrees Celsius and the total pressure = 756 torr, what is the pressure of the water vapor? What is the vapor pressure of the dry gas?

6. If the pressure of Nitrogen collected over water is 0.984 atm at 20.0 degrees Celsius, what is the total pressure in the flask where the gas was collected?

7. If 4 gases all have equal partial pressures and the fifth gas has a partial pressure of 0.800 atm, what is the partial pressure of each of those four gases if the total pressure in the container is 2.00 atm?

Accelerated Chemistry Gas Laws Review (#5) Name ______

1. Match the gas law with the appropriate statement.

a. ______Volume is proportional to temperature when pressure is constant.

b. ______This equation doesn’t involve volume.

c. ______This equation involves pressure, temperature, and volume.

d. ______This law involves an inversely proportional relationship.

e. ______This law has no variables that are constant.

f. ______This law involves no change in temperature.

g. ______Pressure is proportional to temperature with constant volume.

2. Fill in the blank:

a. If pressure is lowered, volume will ______.

b. If temperature is raised, the pressure will ______.

c. ______is held constant in Boyle’s Law.

d. Charles’ Law involves 2 variables: ______and ______.

e. Pressure is measure in 3 units: ______, ______, and ______.

3. Name the five points of the KTG and the six properties of gases.

4. For Boyle’s, Charles’, and Gay-Lussac’s Laws:

a) write the definition b) show the relationship using letters and up/down arrows

c) state what remains constant d) draw a labeled graph e) write the formula

5. Perform the following conversions:

a) 380 torr to mm Hg b) 2.5 atm to torr c) 27 Co to K d) 550 mL to L

6. Calculate:

a. A gas at 1000 torr occupies 1.5 L. At what pressure will the gas occupy 3.0 L if the temperature remains unchanged?

b. A sample of gas is at STP. What will the temperature be after the pressure is increased to 950 torr?

c. A gas with unknown volume at 250 K and 350 mm Hg is changed to 300 K and 250 mm Hg. If the new volume is 1000 mL, what was the old volume?

d. A 2500 mL sample of gas at 30 Co is heated and expands to a volume of 3500 mL at constant pressure. What temperature was required to do this?

e. If the total pressure in a gas collection tube is 760 mm Hg and the pressure of the gas collected over water is 745 mm Hg, what temperature is the water?

f. Four gases are collected in the same vessel. The total pressure is 5.00 atm. What is the pressure of Gas 1 if gas 2 has a pressure that is twice the pressure of gas 3 and 4 and the pressure of Gas 1 equals that of gas 3.

g. If No2 molecules are traveling at 200 m/s, what is the velocity of oxygen?

7. List standard values for the following in all of the units that you can:

Temperature Pressure Volume (1 mole at STP)

Chapter 11 Items to Review

Know the following (basically, your review worksheet sums it all up nicely):

§ Be able to name the 3 main gas laws (Boyle, Charles, Gay-Lussac), define each, draw a graph, and state the relationship using arrows (similar to review sheet)

§ The gas law problems

§ Partial Pressure problems, and looking up water’s Pressure using Table A-7

§ The 5 points of the KMT

§ The 6 properties of gases

§ Ideal gases vs. real gases

§ You will need to be able to apply a law. For example, a hot air balloon expands due to Charle’s Law.

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