NAMES:
1) What is the pressure according to the van der Waal equation for
0.258 moles of hexane confined to a volume of 1.25 L at
400 K? (a = 24.39 atm L2 mol-1 and b = 0.1735
L mol-1)
atm
What would you expect the pressure of hexane to be according to the ideal
gas equation?
2) In the Dumas method 0.08355 mole of ethanol was measured (at
100.0oC) to be contained in a 262 mL volume. Calculate the
percent error as determined by the differences in the pressure calculated
by the ideal gas law versus the van der Waal equation. (a = 12.02
atm L2 mol-1 and b = 0.08407 L mol-1)