Ch 14 Gas Laws 2

(1)A gas in a balloon at constant pressure has a volume of 120.0 mL at −123°C. What is its volume at 27.0°C?Hint

1. 60.0 mL
2. 240.0 mL
3. 26.5 mL
4. 546 mL

(2)If the Kelvin temperature of a gas is tripled and the volume is doubled, the new pressure will beHint

1. 1/6 the original pressure.
2. 2/3 the original pressure.
3. 3/2 the original pressure.
4. 5 times the original pressure.

(3)Which of these gases effuses fastest?Hint

1. Cl2
2. NO2
3. NH3
4. N2

(4)All the oxygen gas from a 10.0-L container at a pressure of 202 kPa is added to a 20.0-L container of hydrogen at a pressure of 505 kPa. After the transfer, what are the partial pressures of oxygen and hydrogen?Hint

1. Oxygen is 101 kPa; hydrogen is 505 kPa.
2. Oxygen is 202 kPa; hydrogen is 505 kPa.
3. Oxygen is 101 kPa; hydrogen is 253 kPa.
4. Oxygen is 202 kPa; hydrogen is 253 kPa.

(5)Which of the following changes would increase the pressure of a gas in a closed container?Hint

1.

Part of the gas is removed.
2.

The container size is decreased.
3.

Temperature is increased.

1. I and II only
2. II and III only
3. I and III only
4. I, II, and III

(6)A real gas behaves most nearly like an ideal gasHint

1. at high pressure and low temperature.
2. at low pressure and high temperature.
3. at low pressure and low temperature.
4. at high pressure and high temperature.

Use the graphs to answer Questions 7–10. A graph may be used once, more than once, or not at all.

Which graph shows each of the following?

(7)directly proportional relationshipHint Link

(8)graph with slope = 0Hint Link

(9)inversely proportional relationshipHint Link

(10)graph with a constant slopeHint Link

Use the drawing to answer Questions 11 and 12.

(11)Bulb A and bulb C contain different gases. Bulb B contains no gas. If the valves between the bulbs are opened, how will the particles of gas be distributed when the system reaches equilibrium? Assume none of the particles are in the tubes that connect the bulbs.Hint

(12)Make a three-bulb drawing with 6 blue spheres in bulb A, 9 green spheres in bulb B, and 12 red spheres in bulb C. Then draw the setup to represent the distribution of gases after the valves are opened and the system reaches equilibrium.Hint