What is the equation of state for real gases ?

Explanation

To derive the equation of state for real gases, we can refer to the Van der Waals equation, which is a modification of the ideal gas law that accounts for the interactions between gas molecules and the volume occupied by them. Here’s a step-by-step solution:

### Step 1: Understand the Ideal Gas Law
The ideal gas law is given by the equation:
\[ PV = nRT \]
where:
- \( P \) = pressure of the gas
- \( V \) = volume of the gas
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