Energy Balance 8 Home Work: Acetone (Ac) is partially condensed out of a gas stream containing 66.9 mole% Ac vapor and the balance nitrogen. Process specifications lead to the flowchart shown below. Calculate the required cooling rate. A heat of vaporization for Ac is Ay = 30.2 kJ/mol at Tbp = 56 C and 1 atm. . From Table B.8 (P 635) kJ Ac(l): CP mol-C = 0.123 + 18.6 X 10-ST Ac(v): CP mol.C = 0.07196 + 20.10 x 10-5T - 12.78 x 10-8T2 + 34.76 x 10-1273 : () k] N2(g): Cp mol C = 0.029 + 0.23 x 10-5 T + 0.5723 x 10-8 72 +2.871 x 10-1213 The specific gravity (0.791) for liquid Acetone given in Table B.1. = 0.0734 L/mol 36.45 mol/s Q(J/s) 0.092 mol Ac(v)/mol 0.908 mol Ny/mol 100 mol/s 20C, 5 atm CONDENSER 0.669 mol Ac(v)/mol 0.331 mol Nz/mol 65C, 1 atm 63.55 mol Ac(1)/s 20C, 5 atm