Elementary Principles 408 - 9.45 a H 2 SO 4 aq 2 NaOH aq Na...

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9- 56 9.45 a. b. HS Oa q N a O H a aS q HO a q 24 2 bg +→ + 22 Basis : 1 mol H SO fed 2 mol NaOH 25°C 40°C 1 mol H SO 25°C 1 mol Na SO 49 mol H O 2 38 mol H O 2 89 mol H O 2 Reference states : Na s H g S s O g 2 bg bg ,, , 2 at 25 ° C HSO a qr C ,,: = 49 25 D ej n mol H SO r kJ mol kJ f o HSO l s o f o HOl f o 2 2 ±± ± ± .. . ± HH H H H =+ = L N M O Q P + =− = + 14 9 4 9 1 8113 733 884 6 49 b g ΔΔ Δ Δ NaOH aq r C = 19 25 D n mol NaOH r kJ mol kJ f o NaOH s s o f o f o 2 2 ± ± . ± H H H = L N M O Q P + = + 21 9 3 8 2 4266 428 9388 38 b g Δ Δ Na SO aq r C = 89 40 D 1 kmol Na SO 142.0 kg 1 kmol kg, 89 kmol H O 18.02 kg 1 kmol kg kg 2 == 0142 1604 1746 . n mol Na SO n k J 2f o Na SO s o Na SO f o f o kJ mol Table B.1 s o kJ mol =1.746 kg, H 2 Ol kJ (kg C) f o 2 2 ± ± ± . ± . . H H m C p H H mC p C p L N M O Q P ++ + F H I K =⋅ 18 9 4 0 2 5 1276 89 4 1384 5 12 4814 44 Δ Δ Δ Δ D Energy balance: Q H nH H ii = + = ∑∑ . ± . . out in f o kJ mol 2 kJ 547 4 2 24 3 28584 Mass of acid fed 1 mol H SO 98.08 g H SO 1 mol 49 mol H O 18.02 g H O 1 mol g = 0.981 kg kJ 0.981 kg acid kJ / kg acid transferred from reactor contents
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This note was uploaded on 02/27/2012 for the course CHEMICAL E 312 taught by Professor Cheung during the Fall '11 term at The University of Akron.

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