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3. (15 points) Suppose 100 mol/s of methane and 150 mol/s oxygen are fed to a reactor at 25 C, the
fractional conversion is 70%, and the products are brought back down to 25 C. Using the following
diagram and table data, answer questions a - d.
CHA(g) + 02(9) - HCHO(g) + H20(v)
100 mol CH4(g)/s
mol CH4(g)/s
150 mol Oz(g)/s
mol Oz(g)/s
25. C
mol HCHO(g)/s
mol H20 (1)/s
25 C
Compound
AHoc (25 .C, 1 atm)
kJ/mol
CH4 (g)
89
O2 (8)
0
H2O (1)
0
HCHO (g)
-571
(a) What is the molar flow rate of oxygen (02) exiting the reactor?
(mol/s)
(b) What is the molar flow rate of formaldehyde (HCHO) exiting the reactor?
(mol/s)
(c) What is the heat of reaction for the given reaction?
KJ/mol
(d) What is the heat transferred from the reactor Q ?
( KW)
(e) If the products were not cooled to 25C but instead came out at 50C what would the heat
transferred from the reactor be Q?
(KW)

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