Final answer:
The new gas law for real interacting molecules is the Van der Waals equation, which accounts for the volume of gas molecules and intermolecular attractions.
Step-by-step explanation:
The new gas law for real interacting molecules is the Van der Waals equation. This equation modifies the ideal gas law to more accurately describe the behavior of real gases. It does so by incorporating two additional terms into the calculations: the first term accounts for the volume occupied by the gas molecules themselves while the second term takes into consideration the attractive forces between the molecules.
These adjustments make it suitable for situations where the ideal gas law does not sufficiently predict the pressure, temperature or volume of a gas due to intermolecular interactions or when gases are not ideal.