Properties of Gases
What properties do gasses have?
Indefinite volume shape of the entire container
Assuming temperature and number of particles are constant. And a change between pressure and volume occurs. What gas law does this situation depict?
Boyle's Law P1V1=P2V2
A sealed, rigid metal tank contains a gas. The temperature of the gas increases. What happens to pressure?
Pressure increases
A gas occupies 3.20 L at 1.20 atm. What will the volume be it the pressure increases to 3.60 atm?
1.07 L
What is the pressure of 0.450 mol of gas in 1.25 L at 290K?
8.75
When gases collide with the side of the container, it hits it with a force. What measurement can be made with this collision.
Gas pressure or Pressure
Assuming pressure and number of particles are constant. And a change between temperature and volume occurs. What gas law does this situation depict?
Charles's Law V1/T1=V2/T2
A gas in a cylinder with a piston expands while temperature remains constant. What happens to pressure?
Pressure decreases
A rigid container holds gas at 2.40 atm and 25ºC. If it was heated to 60ºC what is the new pressure?
2.68 atm
How many moles of gas are in a 2.75 L container at 755 mm Hg and 35ºC?
0.108 mols
Why can we compress gases?
Particles of gases are super spread out, and there is a lot of space between particles.
Assuming volume and number of particles are constant. And a change between pressure and temperature occurs. What gas law does this situation depict?
Gay-Lussac's Law P1/V1 = P2/V2
A gas inside a sealed steel container is cooled. What happens to pressure?
Pressure decreases
A balloon has a volume of 0.450 L at 310 K. If it was cooled to 275 K what is the new volume?
0.399 L
A 5.00 L container holds 0.850 mol of gas at 1.50 atm. What is the temperature in Celsius?
-165.5ºC
We assume gas particles have no attractive or repulsive forces. So how would you describe the path of a gas particle?
Straight line path until it collides with something that changes the path.
Assuming particles of a gas are constant. And a change between pressure, volume, and temperature occurs. What gas law does this situation depict?
Combined Gas Law P1V1/T1 = P2V2/T2
Gas molecules are pumped into a rigid, sealed container. Temperature stays constant. What happens to pressure?
Pressure increases
A gas occupies 1.50 L at 25ºC at constant pressure. What will the new temperature be (in ºC) if it expands to 2.00 L.
124ºC
A gas sample occupies 3.20 L at 0.980 atm and 25ºC. The gas is then compressed to 1.50 L and heated to 75ºC. What is the final pressure?
2.44 atm
What kind of collisions do gas particles have that conserve kinetic energy?
Perfectly Elastic
Assuming nothing stays constant. And a change between pressure, temperature, volume, and amount of particles change. What gas law does this situation depict?
Ideal Gas Law P1V1/n1T1 = P1V1/n1T1
A gas is heated inside a cylinder with a freely moving piston. The piston rises.What happens to pressure?
Pressure does not change
A gas occupies 5.00 L at 1.10 atm and 290 K. What temperature (in Kelvins) is required for the gas to have a volume of 4.25 L at 1.35 atm
302 K
A sample of gas has a pressure of 755 mm Hg, volume of 2.20 L, temperature of 25ºC, and 0.900 mol of gas. What’s the final volume if we add 0.300 mol of gas, the pressure increases to 1.50 atm, and the temperature rises to 100ºC?
3.43 L