Van der Waals Equation Video Lessons

Concept

# Problem: The ideal gas law tends to become inaccurate when a. the pressure is lowered and molecular interactions become significant. b. the pressure is raised and the temperature is lowered. c. the temperature is raised above the temperature of STP.d. large gas samples are involved.e. the volume expands beyond the standard molar volume.

###### FREE Expert Solution

Among the 5 options, we´re asked to state which is the case when the Ideal Gas Law becomes inaccurate.

When dealing with the Ideal Gas Law:

$\overline{){\mathbf{P}}{\mathbf{V}}{\mathbf{=}}{\mathbf{n}}{\mathbf{R}}{\mathbf{T}}}$

Where

P = pressure of the gas

V = volume of the gas

n = number of moles of gas

R = Ideal gas constant

T = temperature of the gas

But based on the Kinetic Molecular Theory, ideal gases are imaginary.

###### Problem Details

The ideal gas law tends to become inaccurate when

a. the pressure is lowered and molecular interactions become significant.

b. the pressure is raised and the temperature is lowered.

c. the temperature is raised above the temperature of STP.

d. large gas samples are involved.

e. the volume expands beyond the standard molar volume.