Elementary Principles 365

# Elementary Principles 365 - 9.16 (cont'd) d. LM OP Q = H =...

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9- 13 d. ±± ± ²² QH m H H ww w == L N M M M O Q P P P A A Δ Table B.5 Table B.5 l, 40 C l, 25 C DD ej ⇒× = F H G I K J −⇒ = 8111 10 167 5 104 8 1290 4 . ± .. ± kJ min kg min kJ kg kg min cooling water mm If elemental species were taken as references, the heats of formation of each molecular species would have to be taken into account in the enthalpy calculations and the heat of reaction term would not have been included in the calculation of ± H . 9.17 a. CO(g) H O v H g CO (g) 22 2 +→ + bg () , ΔΔ Δ Δ ² ² . ( HH H H r o f o CO g) f o CO(g) f o HOv Table B.1 kJ mol =− = B 4115 Basis : 25 1116 m STP product gas h 1000 mol 22.4 m STP mol h 33 = 150°C 111.6 mol/h 0.40 mol H /mol 2 500°C Q r (kW) n 2 (mol H O( )/h) v 2 reactor 0.40 mol CO /mol 2 0.20 mol H O( )/h v 2 Q c (kW) condenser n 3 (mol CO /h) 2 n 4 (mol H /h) 2 n 5 (mol H O(v)/h), 2 sat'd 15°C, 1 atm 15°C, 1 atm n 6 (mol H O( )/h) l 2 C balance on reactor : ± . n 1 040 1116 4464 b g mol h mol CO h H balance on reactor : 2 1116 2 040 2 020 6696 ± . ± . nn =+ = b g bg b g mol h mol H O v h
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