Question

explain the vander wale correction term for pressure and volume.

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Answer 1

Answer:

Ideal Gas Equation and Van der Waals Equation

At constant temperature, a decrease in pressure increases the volume (V). ... Hence, the volume correction also will be small and negligible. As the correction factor becomes negligible, pressure and volume of the real gases will be equal to that of ideal gases.

Answer 2

Answer:

Pressure Correction in Van der Waals Equation

Gaseous particles do interact. For inside particles, the interactions cancel each other. But, the particles on the surface and near the walls of the container do not have particles above the surface and on the walls. So, there will be net interactions or pulling of the bulk molecules towards the bulk that is away from the walls and surface. The molecules experiencing a net interaction away from the walls will hit the walls with less force and pressure. Hence, in real gases, the particles exhibit lower pressure than shown by ideal gases.

The reduction in pressure α square of the particle density in the bulk α (particle density/volume)2

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