Elementary Principles 401 - 9.36 2CH 4 C 2 H 2 + 3H 2 C 2 H...

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9- 49 9.36 a. b. 23 2 CH C H H CH C ( s )+H 42 22 2 →+ 41 4 o 2 Basis: 10.0 mol CH (g)/s (mol CH /s) 1500 C (mol C H /s) n n ± ± 32 4 (mol H (s)/s) (mol C(s)/s) n n ± ± o 1500 C 60% conversion ⇒= − = ± .. n 1 10 1 0 600 4 00 bg mol CH s 4 C balance: (1) H balance: (2) 10 1 4 1 2 2 6 10 4 4 4 2 2 2 2 24 24 =++ ⇒+ = = ++⇒+= ±± nn References for enthalpy calculations : C(s), Hg 2 at 25 ° C HHC i i pi =+ Δ ² f o ej 1500 25 , i = CH , C H , C, H 2 2 Substance mol s kJ mol mol s (kJ mol CH g 10 41.68 CH g Cs in in out out 4 2 ± () ² ± ² ) . ± . ± . ± . n H n H n n n 44 1 6 8 30345 4572 32 45 2 3 4 −− Energy Balance: kJ / s (3) mol C H s Solve (1) -(3) simultaneously mol H s mol C s out in 2 Q H nH n n n ii =⇒ = = ⇒= = Δ 975 250 950 100 2 3 4 ± ² ± ² ± ./ ± ± Yield of acetylene == 6 0 417 . . mol C H
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