Ideal Gas Laws and KMT

According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas?

• The particles have attractive forces between them.

• The particles are considered to have negligible volume.

• The particles are constantly moving in circular paths.

• The particles collide, decreasing the total energy of the system.

A sample of a gas in a rigid cylinder with a movable piston has a volume of 11.2 liters at STP. What is the volume of this gas at 202.6 kPa and 300. K?

• 22.4 L

• 5.10 L

• 24.6 L

• 6.15 L

Which phrase describes the motion and attractive forces of ideal gas particles?

• random curved-line motion and no attractive forces

• random straight-line motion and strong attractive forces

• random straight-line motion and no attractive forces

• random curved-line motion and strong attractive forces

A real gas behaves most like an ideal gas at

• average potential energy of its particles

• ionization energy of its particles

• low pressure and high temperature

• activation energy of its particles

The concept of an ideal gas is used to explain

• the behavior of a gas sample

• why some gases are monatomic

• why some gases are diatomic

• the mass of a gas sample

At 25ºC, gas in a rigid cylinder with a movable piston has a volume of 145 mL and a pressure of 125 kPa. Then the gas is compressed to a volume of 80. mL. What is the new pressure of the gas if the temperature is held at 25ºC?

• 69 kPa

• 93 kPa

• 160 kPa

• 230 kPa

A gas occupies a volume of 444 mL at 273 K and 79.0 kPa. What is the final kelvin temperature when the volume of the gas is changed to 1880 mL and the pressure is changed to 38.7 kPa?

• 292 K

• 2360 K

• 566 K

• 31.5 K

Which graph best represents the pressure-volume relationship for an ideal gas at constant temperature?

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A 3.00-liter sample of gas is at 288 K and 1.00 atm. If the pressure of the gas is increased to 2.00 atm and its volume is decreased to 1.50 liters, the Kelvin temperature of the sample will be

• 432 K

• 288 K

• 144 K

• 576 K

Which graph shows the relationship between pressure and Kelvin temperature for an ideal gas at constant volume?

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