What is the volume correction according to the van der Waals equation?

Volume Correction in Van der Waals Equation

The correction according to the Van der Waals equation is Vn - b.

Answer: D) V - nb

Explanation:

The ideal gas equation is given as:

PV = nRT

where P = pressure, V = volume, n = number of moles, T = temperature, and R = gas constant.

The ideal gas equation assumes that gases behave as point masses and that they are so farther apart that they do not experience any intermolecular forces. However, real gases have a definite volume and are subject to intermolecular forces of attraction.

This is accounted for in the van der Waals equation by introducing two constants:

a = correction for intermolecular forces

b = correction for volume

The van der Waals equation is given as:

(P+a(n^2/V^2))(V-nb) = nRT

When a = b = 0, the above equation approaches the ideal gas equation. Thus, the volume correction is calculated as V - nb.

What is the correction for intermolecular forces in the van der Waals equation?

The correction for intermolecular forces in the van der Waals equation is represented by the constant 'a'.