A stream of carbon monoxide flowing at 300 kg/min is cooled from 450°C to 50°C at a low pressure. 

(a) Calculate the required rate of cooling (kW), using the enthalpy function of APEx. Check the calculation using the heat capacity formula in Table B.2. 

(b) State all the assumptions you made in Part (a). Where in the calculation did you make use of the fact that the cooling was done at a low pressure?

Table B.2

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TABLE B.2 Heat Capacities Form 1: C,[kJ/(mol-C)] or [kJ/(mol·K)] = a + bT + cT + dT Form 2: C,[kJ/(mol-C)] or [kJ/(mol-K)] = a + bT + cT? Example: (C,)acetone(e) = 0.07196 + (20.10 x 10-$)r - (12.78 x 10-8)7? + (34.76 x 10-12)Tr*, where T is in °C. %3D Note: The formulas for gases are strictly applicable at pressures low enough for the ideal-gas equation of state to apply. Range (Units of T) Mol. Temp. State Form Unit ax 10 b x 10 ex 10 d x 1012 Compound Formula Wt. CH;COCH; 58.08 1 °C 123.0 -30-60 18.6 20.10 6.053 0.4147 Acetone °C 34.76 71.96 42.43 28.94 -12.78 -5.033 0.3191 0-1200 0-1200 0-1500 C;H2 26.04 29.0 °C Acetylene Air 18.20 -1.965 1.965 1. 28.09 0.1965 0.4799 273-1800 Ammonia NH, 17.03 °C 35.15 2.954 0.4421 -6.686 0-1200 Ammonium sulfate Benzene (NH4)2SO4 132.15 C,H, 1 215.9 275-328 126.5 74.06 78.11 1 °C 23.4 32.95 6-67 0-1200 1 -25.20 77.57 CH10 CH10 CHs CaC2 CACO, Ca(OH)2 Isobutane 58.12 89.46 49.87 30.13 27.88 -18.91 0-1200 0-1200 0-1200 n-Butane 58.12 92.30 -15.47 34.98 25.64 50.50 Isobutene Calcium carbide Calcium carbonate 56.10 1 82.88 -17.27 -8.66 x 1010 -12.87 x 1010 64.10 K 68.62 1.19 298-720 100.09 K 82.34 4.975 273-1033 Calcium hydroxide 74.10 K. 89.5 276-373 с Calcium oxide Carbon -4.52 x 1010 -4.891 x 100 -2.887 Cao 56.08 с K 41.84 2.03 273-1173 12.01 11.18 1.095 273-1373 с CO2 CO Carbon dioxide 44.01 1. 1. 1 36.11 4.233 7.464 0-1500 Carbon monoxide 28.01 28.95 0.4110 0.3548 -2.220 0-1500 Carbon tetrachloride CC4 Chlorine 153.84 70.91 63.54 93.39 12.98 273-343 Ch 1 °C 33.60 1.367 -1.607 6.473 0-1200 Соpper Cu 1. K 22.76 0.6117 273-1357