Gas Laws

Which of the following best describes Boyle's Law?

• The pressure of a gas is directly proportional to its temperature at constant volume.

• The pressure of a gas is inversely proportional to its volume at constant temperature.

• The volume of a gas is directly proportional to the number of moles at constant pressure.

• The pressure of a gas is directly proportional to the number of moles at constant temperature.

According to Charles's Law, what happens to the volume of a gas if the temperature increases while pressure remains constant?

• The volume decreases.

• The volume remains the same.

• The volume increases.

• The volume becomes zero.

Avogadro's Law states that:

• Equal volumes of gases at the same temperature and pressure contain equal numbers of molecules.

• The pressure of a gas is inversely proportional to its volume.

• The volume of a gas is inversely proportional to its temperature.

• The number of moles of a gas is inversely proportional to its pressure.

Which graph best represents Boyle's Law?

• A straight line with a positive slope.

• A straight line with a negative slope.

• A hyperbola (curved line) showing inverse relationship.

• A horizontal line.

If the volume of a gas is doubled at constant temperature, what happens to its pressure according to Boyle's Law?

• It doubles.

• It is halved.

• It remains the same.

• It becomes zero.

Which of the following is an application of Charles's Law?

• A balloon expands when heated.

• A can is crushed when cooled.

• A gas is compressed in a syringe.

• A tire bursts due to overinflation.

A sample of gas occupies 3.0 L at 300 K. What will be its volume at 600 K, assuming pressure is constant? (Use Charles's Law)

• 1.5 L

• 3.0 L

• 6.0 L

• 9.0 L

If 2.0 moles of a gas occupy 10.0 L at constant temperature and pressure, what volume will 4.0 moles occupy under the same conditions? (Avogadro's Law)

• 5.0 L

• 10.0 L

• 20.0 L

• 40.0 L

Which of the following graphs represents Charles's Law?

• Volume vs. Temperature (in Kelvin) is a straight line with a positive slope.

• Pressure vs. Volume is a hyperbola.

• Volume vs. Pressure is a straight line with a negative slope.

• Volume vs. Number of moles is a horizontal line.

A gas at 2.0 atm pressure has a volume of 4.0 L. What will be its volume if the pressure is increased to 8.0 atm at constant temperature? (Boyle's Law)

• 1.0 L

• 2.0 L

• 4.0 L

• 8.0 L