Ideal Gas Behavior and Equations of State Quizzes - Thermodynamics

Question 1

Which property is NOT a fundamental property of an ideal gas?

Accepted Answer

Mass

Answer

Pressure

Answer

Volume

Answer

Temperature

Question 2

The equation PV = nRT is also known as the:

Accepted Answer

Ideal gas law

Answer

Boyle's law

Answer

Charles's law

Answer

Gay-Lussac's law

Question 3

Which of the following processes involves a constant temperature?

Accepted Answer

Isothermal process

Answer

Isochoric process

Answer

Isobaric process

Answer

Adiabatic process

Question 4

An ideal gas initially occupies 2.0 L at 25 °C. What volume will it occupy if the temperature is raised to 50 °C while the pressure remains constant?

Accepted Answer

4.0 L

Answer

1.0 L

Answer

2.0 L

Answer

8.0 L

Question 5

Which of the following gases exhibits significant deviations from ideal gas behavior at high pressures?

Accepted Answer

Carbon dioxide

Answer

Air

Answer

Helium

Answer

Hydrogen

Question 6

The compressibility factor, Z, is used to:

Accepted Answer

Quantify the deviation of a real gas from ideal gas behavior

Answer

Predict the phase behavior of a substance

Answer

Calculate the critical temperature of a substance

Answer

Determine the molar mass of a substance

Question 7

The van der Waals equation of state is a type of:

Accepted Answer

Cubic equation of state

Answer

Virial equation of state

Answer

Peng-Robinson equation of state

Answer

Ideal gas equation of state

Question 8

Which of the following corrections to the ideal gas law accounts for the volume occupied by gas molecules?

Accepted Answer

Van der Waals correction

Answer

Redlich-Kwong correction

Answer

Soave-Redlich-Kwong correction

Answer

Peng-Robinson correction

Question 9

Which equation best describes the relationship between pressure, volume, and temperature of an ideal gas?

Accepted Answer

The combined gas law

Answer

Boyle's law

Answer

Charles' law

Answer

Gay-Lussac's law

Question 10

Which equation of state incorporates corrections for both the finite volume of gas molecules and the intermolecular forces acting between them?

Accepted Answer

The van der Waals equation

Answer

The ideal gas law

Answer

The Peng-Robinson equation

Answer

The Dieterici equation

Question 11

What is the critical temperature of a gas?

Accepted Answer

The temperature above which the gas cannot be liquefied, regardless of pressure

Answer

The temperature at which the gas condenses to a liquid

Answer

The temperature at which the gas has the same density as its liquid phase

Answer

The temperature at which the gas has the same pressure as its liquid phase

Question 12

Which statement is NOT an assumption of the ideal gas law?

Accepted Answer

Gas molecules experience no intermolecular interactions.

Answer

Gas molecules have negligible volume.

Answer

Gas molecules move randomly and collide elastically.

Answer

The average kinetic energy of gas molecules is proportional to absolute temperature.

Question 13

A 3.0 mol sample of an ideal gas has a volume of 6.0 L at a temperature of 298 K. If the temperature is increased to 398 K and the volume is decreased to 4.0 L, what is the new pressure?

Accepted Answer

12.0 atm

Answer

6.0 atm

Answer

9.0 atm

Answer

15.0 atm

Question 14

A 2.0 g sample of oxygen gas (O2) occupies a volume of 1.0 L at a temperature of 273 K. What is the pressure of the gas?

Accepted Answer

3.0 atm

Answer

1.0 atm

Answer

2.0 atm

Answer

4.0 atm

Question 15

Which of the following is a property of a real gas?

Accepted Answer

Gas molecules experience intermolecular forces.

Answer

Gas molecules have negligible volume.

Answer

Gas molecules travel in straight lines until they collide.

Answer

The average kinetic energy of gas molecules is constant.

Question 16

Which of the following units is used to measure pressure?

Accepted Answer

Atmospheres (atm)

Answer

Joules (J)

Answer

Liters (L)

Answer

Meters per second (m/s)

Question 17

At high pressures, which factor primarily causes deviations from ideal gas behavior?

Accepted Answer

Intermolecular forces

Answer

Molecular size

Answer

Temperature

Question 18

Which of the following assumptions of the ideal gas model is not valid?

Accepted Answer

Molecules have non-negligible volume

Answer

Molecules have negligible interactions

Answer

Molecules move in random directions

Answer

Collisions between molecules are perfectly elastic

Question 19

Which gas deviates significantly from ideal behavior at elevated pressures?

Accepted Answer

Carbon dioxide

Answer

Nitrogen

Answer

Hydrogen

Answer

Helium

Question 20

The compressibility factor (Z) for an ideal gas is:

Accepted Answer

1

Answer

0

Answer

It depends on pressure and temperature

Answer

2

Question 21

The critical temperature of a gas is the temperature:

Accepted Answer

Above which the gas cannot be liquefied

Answer

At which the gas undergoes a phase transition

Answer

At which the gas has maximum density

Question 22

What is the primary distinction between an ideal gas and a real gas?

Accepted Answer

Real gases have non-zero molecular volume and intermolecular forces

Answer

Real gases have lower temperature

Answer

Ideal gases have higher pressure