Ideal Gas Law: Interactive Quizzes and Practice Questions

Question 1

At constant temperature, the volume of an ideal gas is inversely proportional to its:

Accepted Answer

Pressure

Answer

Mass

Answer

Temperature

Answer

Number of moles

Question 2

The root-mean-square speed of a gas molecule is:

Accepted Answer

Proportional to the square root of the temperature

Answer

Proportional to the temperature

Answer

Inversely proportional to the temperature

Answer

Independent of the temperature

Question 3

Which real gas exhibits significant deviations from ideal gas behavior at low temperatures?

Accepted Answer

Carbon dioxide

Answer

Helium

Answer

Neon

Answer

Oxygen

Question 4

The Van der Waals equation includes correction terms that account for:

Accepted Answer

Molecular size and intermolecular forces

Answer

Pressure and temperature

Answer

Volume and mass

Answer

Temperature and concentration

Question 5

Which is NOT an application of the Ideal Gas Law?

Accepted Answer

Predicting the temperature of gas in a rocket engine

Answer

Predicting the pressure of gas in a scuba tank

Answer

Calculating the volume of a balloon filled with helium

Answer

Determining the density of a gas

Question 6

The partial pressure of a gas in a mixture represents:

Accepted Answer

The pressure exerted by that gas if it occupied the entire volume alone

Answer

The pressure exerted by all the gases in the mixture

Answer

The pressure exerted by the gas divided by the total pressure

Answer

The pressure exerted by the gas multiplied by the total pressure

Question 7

Which quantity is NOT a variable in the Ideal Gas Law?

Accepted Answer

Mass

Answer

Pressure

Answer

Volume

Answer

Temperature

Question 8

Which of the following has the smallest molar volume?

Accepted Answer

Helium

Answer

Nitrogen

Answer

Carbon dioxide

Answer

Sulfur hexafluoride

Question 9

Which quantity is directly proportional to the square root of absolute temperature?

Accepted Answer

Root mean square velocity of gas molecules

Answer

Average velocity of gas molecules

Answer

Kinetic energy of gas molecules

Answer

Collision frequency

Question 10

Which gas exhibits significant deviations from ideal gas behaviour at high pressures and low temperatures?

Accepted Answer

Carbon dioxide

Answer

Nitrogen

Answer

Helium

Answer

Hydrogen

Question 11

The Ideal Gas Law states that PV = nRT. How can you use this equation to determine the density of a gas sample, given its mass and volume?

Accepted Answer

Density = (Mass of gas) / (Volume of gas)

Answer

Density = (Pressure of gas) / (Volume of gas)

Answer

Density = (Temperature of gas) / (Volume of gas)

Answer

Density = (Mass of gas) / (Pressure of gas)

Question 12

A gas mixture contains hydrogen with a partial pressure of 1.5 atm and oxygen with a partial pressure of 2.0 atm. What's the total pressure of the gas mixture?

Accepted Answer

3.5 atm

Answer

0.5 atm

Answer

1.0 atm

Answer

4.0 atm

Question 13

A gas occupies a volume of 2.5 L at a pressure of 1.5 atm. If the pressure is reduced to 1.0 atm while the temperature remains constant, what is the new volume of the gas?

Accepted Answer

3.75 L

Answer

5.00 L

Answer

8.00 L

Answer

1.67 L

Question 14

A sample of gas has a temperature of 323 K and a volume of 10.0 L. If the temperature is lowered to 223 K while the pressure remains constant, what is the new volume of the gas?

Accepted Answer

6.87 L

Answer

16.15 L

Answer

20.00 L

Answer

13.74 L

Question 15

A gas mixture contains two gases, A and B, with partial pressures of 2.0 atm and 3.0 atm, respectively. What is the mole fraction of gas B in the mixture?

Accepted Answer

0.6

Answer

0.8

Answer

1.0

Answer

0.4

Question 16

Which of the following assumptions is NOT made in the Ideal Gas Law?

Accepted Answer

Gas particles experience strong attractive forces.

Answer

Gas particles are assumed to have negligible volume.

Answer

Gas particles move randomly and collide elastically.

Question 17

Which of the following actions will increase the average kinetic energy of gas molecules?

Accepted Answer

Increasing the temperature

Answer

Increasing the pressure

Answer

Decreasing the volume

Answer

Adding more gas to the container

Question 18

Which of the following is NOT a variable in the Ideal Gas Law formula, PV = nRT?

Accepted Answer

Mass

Answer

Pressure

Answer

Volume

Answer

Temperature

Question 19

A mixture of gases contains 0.5 mol of helium and 1.0 mol of nitrogen. The total pressure of the mixture is 2.0 atm. What is the partial pressure of helium?

Accepted Answer

1.0 atm

Answer

0.5 atm

Answer

1.5 atm

Answer

2.5 atm

Question 20

Which of the following best describes the behavior of gases at very high pressures and low temperatures?

Accepted Answer

Deviation from ideal gas behavior

Answer

Liquid-like behavior

Answer

Perfect gas behavior

Answer

Solid-like behavior

Question 21

Which of the following gases has the highest rate of effusion, according to Graham's Law of Effusion?

Accepted Answer

Helium

Answer

Carbon dioxide

Answer

Oxygen

Answer

Sulfur dioxide

Question 22

What is the relationship between the average kinetic energy of gas molecules and temperature?

Accepted Answer

Directly proportional

Answer

Not related

Answer

Logarithmically related

Answer

Inversely proportional