Gas Laws

Gas Laws

Boyle's Law

Charles' Law

Gay-Lussac's Law

Combine Gas Law

Boyle's Law

- 1662, Robert Boyle

- a relation concerning the compression and expansion of a gas at a constant temperature

Multiple Choice

What is the relation between pressure and volume at constant T and n?

• Inversely Propotional

• Directly Proportional

• Direct Square

• Inverse Square

Multiple Choice

At constant T and n, what happens to the pressure of the gas if the volume of its container is reduced to half?

• halved

• doubled

• quartered

• quadrupled

Multiple Choice

Which of the following equations can be used to represent Boyle's Law?

• P = V

• P = 1/V

• P = kV

• P = k/V

Multiple Choice

For a problem involving 2 sets of data for P and V at constant T and n, which of the following equations can be used to represent Boyle's Law?

• P1V1 = P2V2

• P1/V1 =P2/V2

• P1V2 = P2V1

• P1/V2 = P2/V1

Multiple Choice

A sample of helium gas occupies 12.4 L at 23°C and 0.956 atm. What volume will it occupy at 1.20 atm assuming that the temperature stays constant?

• 9.88 L

• 9.00 L

• 8.98 L

• 8.00 L

Multiple Choice

Which of the following graphs represents Boyle's Law?

Charles' Law

- 1787,  Jacques-Alexandre-César Charles

- a statement that the volume occupied by a fixed amount of gas is directly proportional to its absolute temperature if the pressure remains constant.

Multiple Choice

At constant P and n, what happens to the volume of the gas as temperature increases?

• increases

• decreases

• remains constant

• may vary

Multiple Choice

What is the relation between V and T at constant P and n?

• directly proportional

• inversely proportional

• direct square

• inverse square

Multiple Choice

Which of the following equations can be used to represent Charles' Law?

• V = T

• V = 1/T

• V = kT

• V = k/T

Multiple Choice

For a problem involving 2 sets of data for T and V at constant P and n, which of the following equations can be used to represent Charles' Law?

• V1T1 = V2T2

• V1/T1 = V2/T2

• V1/T2 = V2/T1

• V1T2 = V2T1

Multiple Choice

Suppose a balloon containing 1.30 L of air at 24.7°C is placed into a beaker containing liquid nitrogen at

–78.5°C. What will the volume of the sample of air become (at constant pressure)?

• 8.49 L

• 0.849 L

• .489 L

• 4.89 L

Multiple Choice

Which of the following graphs represents Charles' Law?

Gay-Lussac's Law

- 1802, Joseph-Louis Gay-Lussac

- relationship between the pressure of a gas and its absolute temperature, at constant volume

Multiple Choice

At constant V and n, what happens to the pressure of the gas as temperature decreases?

• increases

• decreases

• remains constant

• may vary

Multiple Choice

What is the relation between P and T at constant V and n?

• direct

• inverse

• direct square

• inverse square

Multiple Choice

Which of the following equations can represent Gay-Lussac's Law?

• P = T

• P = 1/T

• P = kT

• P = k/T

Multiple Choice

For a problem involving 2 sets of data for T and V at constant P and n, which of the following equations can be used to represent Gay Lussac's Law?

• P1T1 = P2T2

• P1/T1 = P2/T2

• P1T2 = P2T1

• P1/T2 = P2/T1

Multiple Choice

Determine the pressure change when a constant volume of gas at 1.00 atm is heated from 20.0 °C to 30.0 °C.

• 1.50 atm

• 1.03 atm

• 1.00 atm

• 1.30 atm

Multiple Choice

Which of the following graphs represents Gay-Lussac's Law?

Combined Gaw Law

- 1834,  Benoît Paul Émile Clapeyron

- combined the previous gas laws into one

Multiple Choice

Which of the following represents the Combined Gas Law?

• P1V1T1 = P2V2T2

• P1/V1T1 = P2/V2T2

• P1V1/T1 = P2V2/T2

• P2V2T2 =P1V1T1

Multiple Choice

Find the volume of a gas at STP when 2.00 L is collected at 745.0 mm Hg and 25.0 degrees Celsius.

(STP: P=1atm=760. mmHg, T=273K)

• 1.80 L

• 1.70 L

• 1.50 L

• 1.30 :