Refer to Example 6-17. Recalculate the pressure of Cl₂(g) by using both the ideal gas equation and the van der Waals equation at the temperatures 

(a) 100 °C;

(b) 200 °C;

(c) 400 °C.

From the results, confirm the statement that a gas tends to be more ideal at high temperatures than at low temperatures.

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.