(A) Substitute CO₂(g) for Cl₂(g) in Example 6-17, given the values a = 3.66 bar L² mol^-2 and b = 0.0429 L mol^-1. Which gas, CO₂ or Cl₂, shows the greater departure from ideal gas behavior?

(B) Substitute CO(g) for Cl₂(g) in Example 6-17, given the values a = 1.47 bar L² mol^-2 and b = 0.0395 L mol^-1. Including CO₂ from Practice Example 6-17A, which of the three gases—Cl₂, CO₂, or CO—shows the greatest departure from ideal gas behavior?

Example 6-17

Use the van der Waals equation to calculate the pressure exerted by 1.00 mol Cl₂(g) confined to a volume of 2.00 L at 273 K. For Cl₂, a = 6.34 bar L² mol^-2 and b = 0.0542 L mol^-1.