GAS LAWS
Three balloons are inflated to the same size. The three balloons are submerged in buckets filled with ice water, tap water and water heated to 65°C. What results would you expect from this experiment?
The balloon in the 65°C water would expand.
Oxygen gas is used to fill a balloon and a short time later the balloon is observed to only be half full. Explain this observation.
The balloon leaks and the temperature went down.
How will the behavior of the gases in the piston chamber change if more pressure is applied to the piston?
The gas particles will hit the walls more frequently.
What is going to happen to the volume of a gas that is put under MORE pressure while keeping the temperature constant?
The volume will decrease.
Assuming ideal conditions, which statement is true of these samples of gases?
They all have the same volume at the same temperature and pressure.
What is the volume of 1.0 mole of an ideal gas at standard temperature and pressure?
22 L
What is the volume of 1.0 mole of hydrogen gas at standard temperature and pressure?
22 L
How many moles of O2 are required to react completely with 5.00 moles C4H10?
32.5
Boyle's law is an experimental gas law that shows the relationship between the pressure of a gas and its corresponding volume. Based on the picture above, which model below correctly represents Boyle's law?
down swoop
This equation is known as the ideal gas law, and it can be used to predict the behavior of many gases at relatively low pressure. From this equation, you can see that as the temperature of a gas increases,
either the pressure of the gas, the volume of the gas, or both, will increase.
Where would the HIGHEST air pressure be measured?
sea level
Students in physics were conducting experiments to determine the relationship between gas volume and temperature. Using a flexible container filled with helium gas, students manipulated the temperature and recorded the new volumes as the experiment progressed. The instructor asked the students to stop the graph at 350K. What was the volume of helium gas at 50K?
37.5cc
What volume will a gas occupy at 325 K if it occupies 5.8 L at 376 K? Assume the moles and pressure of gas are held constant.
5.01 L
In a reaction 4 NH3 + 5 O2 → 4 NO + 6 H2O, 1 mole of ammonia reacts with 2 moles of oxygen. Which of these is correct after the reaction is complete?
All the ammonia is consumed.
The graph illustrates __________ Law. At any point on the curve, the product of P (pressure) x V (volume) is ___________.
Boyle's; constant
How many liters of H2 are required to form 5 moles of H2O at STP?
112 liters
The temperature of a gas is directly related to the kinetic energy of the gas particles. Determine which actions below will have NO EFFECT on the kinetic energy of gas particles. I. Poking a hole in a tire. II. Sticking an inflated balloon in a freezer. III. Adding more air to a balloon. IV. Lighting a candle. V. Setting a block of ice on the dining room table.
I and III
Which scenario listed below does NOT demonstrate the relationship between the pressure and temperature in a gas
Squeezing a balloon and watching it pop outside on a sunny day.
A student puts air into a balloon and ties it shut. Which action listed below will lead to a decrease in pressure inside the balloon?
Sticking the balloon in a freezer.
Gases exhibit certain behaviors given the temperature or pressure of the system. Which model displays the change in a gas when the temperature of the gaseous system decreases?
RED ARROWS
Gases are a unique state of matter because the volume of a gas can be compressed or expanded based on its temperature. Jacque Charles studied these changes by observing hot air balloons. For a given mass, as the gas is heated its volume expands and as it cools the volume contracts. Charles found that the volume is directly proportional to temperature when the mass and pressure remain constant. Which equation represents the relationship in Charles' law?
(V1/T1)=(V2/T2)
A compressed air tank carried by scuba divers has a volume of 8.00 L and a pressure of 141 atm at 22.0°C. What is the volume (in liters) of air in the tank at STP?
1,044 L
Ladasha placed a marshmallow in a syringe for science class when she pulled the plunger out increasing the volume in the syringe the marshmallow expanded. How can this best be explained?
As the pressure decreased in the syringe the volume of the marshmallow increased.
Charles's law is an experimental gas law that shows the relationship between the temperature of a gas and its corresponding volume. Based on the picture above, which model below correctly represents Charles's law?
linear line
According to the kinetic molecular theory, the pressure of a gas in a container will increase if the
number of collisions with the container wall increases.
