Thermo

Question 1

What is the ideal gas law equation?

Answer 1

PV = nRT

Question 2

True or False: An ideal gas obeys the ideal gas law under all conditions.

Answer 2

False

Question 3

Fill in the blank: The temperature in the ideal gas law must be expressed in _______.

Answer 3

Kelvin

Question 4

What does ‘P’ stand for in the ideal gas law?

Answer 4

Pressure

Question 5

What does ‘V’ represent in the ideal gas law?

Answer 5

Volume

Question 6

What does ‘n’ represent in the ideal gas law?

Answer 6

Number of moles

Question 7

What is ‘R’ in the ideal gas law?

Answer 7

Universal gas constant

Question 8

What does ‘T’ represent in the ideal gas law?

Answer 8

Temperature

Question 9

What is the value of the universal gas constant R in L·kPa/(K·mol)?

Answer 9

8.314

Question 10

What is the relationship between pressure and volume in Boyle’s Law?

Answer 10

Inverse relationship

Question 11

According to Charles’s Law, what is the relationship between volume and temperature?

Answer 11

Direct relationship

Question 12

True or False: Avogadro’s Law states that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules.

Answer 12

True

Question 13

What is the formula for Boyle’s Law?

Answer 13

P1V1 = P2V2

Question 14

What is the formula for Charles’s Law?

Answer 14

V1/T1 = V2/T2

Question 15

What is the definition of an ideal gas?

Answer 15

A hypothetical gas that perfectly follows the gas laws.

Question 16

What is the critical temperature of a substance?

Answer 16

The temperature above which it cannot exist as a liquid.

Question 17

What is the significance of the van der Waals equation?

Answer 17

It corrects the ideal gas law for intermolecular forces and molecular volumes.

Question 18

What does ‘a’ represent in the van der Waals equation?

Answer 18

Attraction between particles

Question 19

What does ‘b’ represent in the van der Waals equation?

Answer 19

Volume occupied by gas molecules

Question 20

How does temperature affect gas pressure according to the kinetic molecular theory?

Answer 20

Higher temperature increases pressure.

Question 21

What is Dalton’s Law of Partial Pressures?

Answer 21

The total pressure of a gas mixture is the sum of the partial pressures of its individual gases.

Question 22

What is the definition of absolute zero?

Answer 22

The theoretical temperature at which a system has minimum energy.

Question 23

What is the approximate value of absolute zero in Celsius?

Answer 23

-273.15 °C

Question 24

What is the process called when gas molecules escape from a liquid?

Answer 24

Evaporation

Question 25

True or False: Gases have a definite volume.

Answer 25

False

Question 26

What is the primary factor that influences the behavior of gases?

Answer 26

Temperature, pressure, and volume

Question 27

What does the term ‘compressibility’ refer to in gases?

Answer 27

The ability of a gas to decrease in volume under pressure.

Question 28

What is the difference between an ideal gas and a real gas?

Answer 28

Real gases exhibit intermolecular forces and occupy space, unlike ideal gases.

Question 29

What is the main assumption of the kinetic molecular theory regarding gas particles?

Answer 29

Gas particles are in constant, random motion.

Question 30

What happens to gas volume when pressure increases at constant temperature?

Answer 30

Volume decreases.

Question 31

What is the definition of vapor pressure?

Answer 31

The pressure exerted by a vapor in equilibrium with its liquid at a given temperature.

Question 32

What is the term for the temperature at which a gas condenses into a liquid?

Answer 32

Condensation point