ET unit 7 -- Ideal Gases

In the ideal gas law equation, what does the letter R represent?

• temperature in Kelvin

• temperature in Celsius

• universal gas constant

• mole ratio

Under what condition do Real and Ideal gases behave differently?

• extreme temperatures and pressures

• low volume and pressures

• at equilibrium

• when the universal gas constant is zero

What is an ideal gas?

• a gas with the lowest molar mass

• a gas that follows the laws under all conditions

• any of the noble gases

• a gas that follows the laws under high pressures

Which symbol in the ideal gas equation represents a quantity measured in kilopascals?

• T

• R

• V

• P

A 3L container of gas at 150 kPa is kept at 25 degrees Celsius. Before using the ideal gas equation to calculate the number of moles, what unit given in the problem must be converted to Kelvin?

• L

• degrees Celsius

• kPa

• moles

Which symbol in the ideal gas equation represents a quantity measured in moles?

• P

• T

• R

• n

Which statement describes a Real gas?

• no attractive forces between particles

• particles have volume

• volume of particles is not significant

Ideal gas particles _____. CLICK ALL CORRECT ANSWERS.

• move randomly

• have no kinetic energy

• are attracted to each other

• have no mass or volume

• have mass and volume

If a gas were truly an ideal gas, it would be impossible to turn it into a liquid by cooling it.

• True

• False

Which symbol in the Ideal gas equation is always known?

• the pressure, P

• the volume, V

• the gas constant, R

• the temperature, T