Equilibrium Ammonia Reactor

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1	Equilibrium Ammonia Reactor
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5	Instructions: The objective is to determine the extents of reaction for an equilibrium ammonia reactor This spreadsheet uses the Solver Add-on available at no cost from the Chrome App Store. Green cells denote user input, yellow are decision variable determined by the solver, the red cell is the problem objective.
6	Solver Add-on:	Solver
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8	Reaction Stoichiometry
9		Stoichiometric	Delta Hf	Delta Gf
10		Coefficient	[Joules]	[Joules]
11	Nitrogen	-1.0	0.0	0.0
12	Hydrogen	-3.0	0.0	0.0
13	Ammonia	2.0	-45900.0	-16400.0
14	WEIGHTED SUM		-91800.0	-32800.0
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16	Operating Conditions
17	Temperature	750	Kelvin
18	Pressure	200	atm
19	Gas Constant (R)	8.314	J/K/gmol
20	ln Ka	-9.079500799	<< computed using van't Hoff equation
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22	Stream Table
23		Inlet Flow	Outlet Flow	Outlet Mole	Partial Pressure	ln(P)
24		[kg-mol/hr]	[kg-mol/hr]	Fraction	[atm]
25	Nitrogen	1000.0	407.7	0.1069	21.37	3.06
26	Hydrogen	4000.0	2223.2	0.5827	116.54	4.76
27	Ammonia	0.0	1184.5	0.3105	62.09	4.13
28	TOTAL	5000.0	3815.5	1.0000	200.00
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30	Extent	592.27	kgmol/hour	<< the solver adjusts thiis variable to satisfy equilibrium condition.
31	ln Kp	-9.079500799	<< computed by weighted sum of ln(P)
32	ln Ka - ln Kp	0.000000000	<< will be zero for the equilibrium extent of reaction
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