The Dutch scientist Johannes van der Waals developed a useful equation to predic

Question

The Dutch scientist Johannes van der Waals developed a useful equation to predict the behavior of real gases. In the van der Waals equation, what are the constants a and b, respectively?

a is a measure of how strongly the gas molecules attract one another, and b is a measure of the finite volume occupied by the molecules. a is a measure of the random motion of gas molecules, and b is a measure of the volume of the container. a is a measure of the finite volume occupied by the molecules, and b is a measure of how strongly the gas molecules attract one another. a is a measure of the molecular mass of the gas molecules, and b is a measure of the finite volume occupied by the molecules.

Explanation / Answer

The vanderwals equation is

(P + n2a/V2)(V-nb) = nRT

a and b are vanderWaals constants

The van der Waals constant b is a measure of the actual volume occupied by a mole of gas molecules; b has units of L/mol.

The magnitude of a reflects how strongly the gas molecules attract each other. the van der Waals constant a has units of L2-

So in the question the answer is option 1 and is

a measure of how strongly the gas molecules attract one another, and b is a measure of the finite volume occupied by the molecules.

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