Directions: Read Section 11.2 of Your Textbook, Then Answer the Following Questions

Name______Period______Date______

The Gas Laws

Directions: Read section 11.2 of your textbook, then answer the following questions.

Match each chemist to one of the gas laws below:

_____ 1. The pressure of a gas is inversely proportional a. Gay-Lussac
to its volume.

_____ 2. The sum of the partial pressures of gases in a b. Charles
mixture is equal to the total pressure of the mixture.

_____ 3. The pressure of a fixed mass of gas at constant c. Boyle
volume varies directly with the Kelvin temperature.

_____ 4. The volume of a gas is directly proportional to d. Dalton
its temperature.

5. Complete the following statements by writing "decreases, "increases, or "remains the same" on the line provided.

As a gas is compressed in a cylinder...

a. the distance between gas molecules______

b. the number of gas molecules ______

c. its volume______

d. its pressure______

e. its density______

f. its mass______

6.  State whether the pressure of a fixed mass of gas will increase, decrease, or stay the same in the following circumstances:

a.  ______temperature increases, volume stays the same.

b.  ______volume increases, temperature stays the same.

c.  ______temperature decreases, volume stays the same.

d.  ______volume decreases, temperature stays the same.

7.  Two sealed flasks, A and B, contain two different gases of equal volume at the same temperature and pressure. Assume that flask A is warmed as flask B is cooled. Will the pressure in the two flasks remain equal? If not, which flask will have the higher pressure?

8.  State the combined gas law.

9.  Use Boyle’s law to solve for the missing value in each of the following:

a.  P1 = 350.0 torr, V1 = 200.0 mL, P2 = 700.0 torr, V2 = ?

b.  V1 = 2.4 x 105 L, P2 = 180 mm Hg, V2 = 1.8 x 103 L, P1 = ?

10.  Use Charles’s law to solve for the missing value in each of the following:

a.  V1 = 80.0 mL, T1 = 27oC, T2 = 77oC, V2 = ?

b.  V1 = 125 L, V2 = 85.0 L, T2 = 127oC, T1 = ?

c.  T1 = -33oC, V2 = 54.0 mL, T2 = 160.0oC, V1 = ?

11.  A 24 L sample of a gas at fixed mass and constant temperature exerts a pressure of 3.0 atm. What pressure will the gas exert if the volume is changed to 16 L?

12.  A sample of argon gas occupies a volume of 950 mL at 25.0oC. What volume will the gas occupy at 50.0oC if the pressure remains constant?

13.  A 500.0 mL gas sample at STP is compressed to a volume of 300.0 mL and the temperature is increased to 35.0oC. What is the new pressure of the gas in pascals?