11: Ideal and Non-Ideal Gases
- Page ID
- 414077
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- 11.1: The Ideal Gas Equation
- The concept of an ideal gas is a theoretical construct that allows for straightforward treatment and interpretation of gases’ behavior. As such, the ideal gas is a simplified model that we use to understand nature, and it does not correspond to any real system.
- 11.2: Behaviors of Non-Ideal Gases
- Non-ideal gases (sometimes also referred to as “real gases”), do not behave as ideal gases because at least one of the assumptions in Definition: Ideal Gas is violated. What characterizes non-ideal gases is that there is no unique equation that we can use to describe their behavior.
- 11.3: Critical Phenomena
- The compressibility factor is a correction coefficient that describes the deviation of a real gas from ideal gas behaviour. It is usually represented with the symbol z.
- 11.4: Fugacity
- The chemical potential of a pure ideal gas can be calculated using Equation 9.4.5. Since we are not interested in mixture, we can drop the asterisk in μ∗, and rewrite Equation 9.4.5 as: