Question

The van der Waals coefficients for oxygen are a = 0.138.Jm³/mol² and b = 3.18 x 10-5m³/mol. Use these values to draw a van der Waals isotherm of oxygen at 100 K. On the same graph, draw isotherms of one mole of an ideal gas. Look at volumes from 0 to 1m³ and pressures from 0 to 105 Pa.

Answer 1

To answer the student's question, one would calculate pressure values for oxygen at 100 K using the van der Waals coefficients, plot these on a graph to create the isotherm, and then plot the isotherm of an ideal gas for comparison on the same graph.

Step-by-step explanation:

The student has been asked to use the van der Waals coefficients for oxygen, which are a = 0.138 J·m³/mol² and b = 3.18 × 10^-5 m³/mol, to draw a van der Waals isotherm at 100 K. To complete this task, one would typically use the van der Waals equation to calculate pressure values at various volumes and then plot these points on a graph. Once plotted, a curve can be drawn to represent the van der Waals isotherm of oxygen. Additionally, the student is instructed to plot the isotherms of one mole of an ideal gas on the same graph using the ideal gas law, over volumes from 0 to 1 m³ and pressures from 0 to 10^5 Pa.