A gas is seen as a collection of molecules or individual atoms that are in constant motion. The Kinetic-Molecular Theory tries to use data of real gases to predict how an ideal gas would behave if they existed.
Concept #1: Understanding the Kinetic-Molecular Theory
Ideal gases are imaginary and don’t actually exist. However, if they did exist then there would be certain characteristics that a gas would need to possess in order to be an ideal gas.
Concept #2: The Characteristics of an Ideal Gas
Example #1: Two identical 10.0 L flasks each containing equal masses of O2 and N2 gas are heated to the same temperature. Which of the following statements is/are true?
a) The flask with the oxygen gas will have a greater overall pressure.
b) The nitrogen and oxygen gases will have the same average speed or velocity.
c) The nitrogen and oxygen gases will have the same average kinetic energy.