1. Consider a 1.00mol sample of C2H6 gas. The van der Waals constants for this gas are a=5.507atmL2mol2 and b=6.51102Lmol1. Calculate the pressure of the gas using (i) the ideal gas equation and (ii) the van der Waals equation and the % error (assuming the vdW equation yields the "true" value) for the following conditions: (a) 273K,22.414L (b) 1000K,100cm3. 2. Use Table 1C.4 (Selected equations of state) to calculate the critical constants for the gas in Question 1