WorksheetsGas Laws Review
Total questions: 30
Worksheet time: 2hrs 26mins
At an ocean depth of 10.0 m, a diver’s lung capacity is 2.40 L. The air temperature is 32.0°C and the pressure is 101.30 kPa. What is the volume of the diver’s lungs at the same depth, at a temperature of 21.0°C and a pressure of 141.20 kPa? Which Gas Law will you use to solve?
PV=nRT
Combined Gas Law
Boyles Law
Charles Law
What is the molar volume of gas at STP?
1 mole of gas occupies 22.4L
1 L of gas contains 1 mole
1 mole of gas contains 6.02 x 10 23 particles
The answer will vary depending on the type of gas
A steel tank with a volume of 9.583 L contains N2 gas under a pressure of 4.972 atm at 31.8 °C. Calculate the number of moles of N2 in the tank. Which gas law will you use to solve?
PV=nRT
Combined Gas Law
Boyles Law
Charles Law
A 40.0-L sample of fluorine is heated from 90.0°C to 186.0°C. What will happen to the volume?
Increase
Decrease
Stay the same
It will explode
What happens in a fixed volume container when the temperature of the gas inside is increased?
The pressure increases because the particles of gas are attracted to each other
The pressure decreases because there are fewer collisions of gas particles with the sides of the container.
The pressure increases because there are more frequent collisions of gas particles with the sides of the container.
The pressure is fixed because the volume will change.
When the volume of a container is increased at a constant temperature....
the amount of gas increases to make up for the loss of pressure
the pressure increases because the temperature increases.
the pressure remains constant
the pressure decreases because the particles have fewer collisions with the sides of the container.
Air is added to an easily expandable container. The pressure inside the container
increases
decreases
stays the same
goes to zero
The relationship between pressure and volume can be described as
inverse
direct
indirect
parallel
The relationship between pressure and temperature can be described as
inverse
direct
indirect
negative
What does Gay-Lussac’s Law state about the relationship between pressure and temperature:
pressure is inversely proportional to volume at constant temperature.
pressure is directly proportional to temperature at constant volume.
pressure and temperature have no relationship
volume is directly proportional to temperature at constant pressure.
Which is NOT a property of gases?
a.
b.
c.
d.
Gas particles take the shape and volume of the container they are in.
Gases have a low density
When they collide, the gas particles slow down as they lose energy
Gases are easily expandable and compressible
A weather balloon expands as it enters the upper atmosphere where air pressure and temperature are relatively low. Which of the following best explains why the balloon gets bigger?
The direct relationship between pressure and volume
The inverse relationship between pressure and volume
The direct relationship between volume and temperature
The inverse relationship between volume and temperature
A gas is confined in a steel tank with a volume of 6 L. At 20°C, the gas exerts a pressure of 8 atm. 15 minutes later, the pressure reading is 9 atm. What is the most likely scenario?
The volume of the gas decreased causing the pressure to increase
Some of the gas leaked out of the tank raising pressure
The temperature of the gas was lowered causing the pressure to increase
Heating in the tank caused the average kinetic energy of the particles was raised causing the pressure to increase.
If the temperature of a container of gas remains constant, how could the pressure of the gas decrease?
molecules of gas are removed
the size of the container decreases
the mass of the molecules increases
the temperature cannot stay constant
Standard Temperature is:
1 atm
0oC
273 oC
273 K
Standard Pressure is:
1 atm
760 mmHg
273 K
0 atm
Students collecting data for a gas law lab created this graph. What 2 variables were they probably recording?
Pressure and Volume
Volume and Temperature
Pressure and Temperature
Moles and Volume
What is the name of this relationship?
Indirect Coorelation
Inversely Proportional
Directly Proportional
Positive Coorelation
What does "n" stand for?
Volume
moles
grams
Gas Constant
What does "R" represent?
Volume
Moles
Grams
Gas Constant
Which are appropriate measurements of pressure?
mmHg
kPa
atm
Newton-meters
Joules
What unit should Temperature be in for gas laws?
Kelvin
Celcius
Farenheit
If the pressure of a gas doubles, what will happen to the volume?
The volume will double
The volume will reduce by 1/2
The volume will increase by an unknown amount
The volume will decrease by an unknown amount
If the temperature (in K) of a gas triples, what will happen to the pressure?
The pressure will triple
The pressure will reduce by a factor of 3
The pressure will stay constant
The pressure will increase by an unknown amount because the temperature should be converted to Celcius first.
4 L of a gas at 2 atm is at 450K. How many moles of gas do you have?
0.22 moles
0.13 mols
4.6 mols
9.2 mols
2 moles of a gas at STP has a volume of 44.8L. What will be the volume at 2atm and 300K?
24.6 L
20.4L
0.04 L
49.2 L
Which are parts of the Kinetic Molecular Theory of gases?
Gases move because they are attracted and repelled by one another.
Gases transfer kinetic energy when they collide
Gases are in constant random motion.
Gases have virtually no volume of their own
Gases have molecules that are always diatomic
What is Avogadro's principle with respect to gases?
Pressure and Volume are inversely proportional
Equal volumes of gases at the same temperature and pressure contain the same number of molecules
Volume and temperature are directly proportional
The volume of gas at STP will depend on the type of gas.
What is NOT true about pressure?
Pressure is the force per unit area
Pressure in a container of gas is caused when molecules hit the sides of the container
Pressure can be measured in psi
When the kinetic energy of a gas decreases, the pressure will increase.
Your car has been sitting overnight. As you begin to drive, the pressure in the tires increase. What is a possible explanation?
The molecules in the tire begin to warm up, giving them more KE and increasing the pressure.
The molecules in the tire begin to warm up, giving them less KE and increasing the pressure
Air is added to the tires while you drive.
The volume of the tires decreases while you drive, increasing the pressure.
