is this find in table? if yes which one \mu_CO = 0.01 g/(cm.s) \mu_02 0.02 g/(cm. s) 28.14 Consider the process shown in the figure (next page). A bulk gas stream containing 0.10 mole% of carbon monoxide (CO) gas, 2.0 mole% O2 gas, and 97.9 mole% of CO2 gas flows over a flat catalytic surface of length 0.50 m at a bulk velocity of 40 m/s at 1.0 atm and 600 K. Heat-transfer processes maintain the gas stream and catalytic surface at 600 K. At this temperature, the catalytic surface promotes the oxidation reaction CO(g) +1/202(g) → CO2(g). Let A=CO, B=O₂, C=CO2. The gas-phase diffusion coefficients at 1.0 atm and 300 K are DAB = 0.213 cm²/s, DAC= 0.155 cm²/s, DBC=0.166 cm²/s. a. What are the Schmidt numbers for CO and O₂ mass transfer? What species (CO, O2, CO₂) is considered the carrier gas? b. For CO mass transfer, what is the average convective mass- transfer coefficient (ke) over the 0.50 m length of the catalytic surface, and the local mass-transfer coefficient (kex) at the far edge of the catalytic surface (x=L=0.50 m)? c. Using boundary-layer theory, scale ke for CO mass transfer to ke for O₂ transfer. d. At 600 K, the surface reaction constant for the first-order oxidation reaction with respect to CO concentration is k, 1.5 cm/s. What is the average molar flux of CO to the catalytic surface, assuming that the composition of CO in the bulk gas is maintained at 0.10 mole%? 0.1 mole% CO 2.0 mole% O2 97.9 mole% CO2 600 K, 1.0 atm V-40 m/s CO(A) + 1/202(B) CO₂ (C) NA CA, CAS catalyst surface 1 x = 0 x=L=0.5 m

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
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is this find in table? if yes which one \mu_CO = 0.01 g/(cm.s)
\mu_02
0.02 g/(cm. s)
28.14 Consider the process shown in the figure (next page). A
bulk gas stream containing 0.10 mole% of carbon monoxide (CO)
gas, 2.0 mole% O2 gas, and 97.9 mole% of CO2 gas flows over a flat
catalytic surface of length 0.50 m at a bulk velocity of 40 m/s at
1.0 atm and 600 K. Heat-transfer processes maintain the gas stream
and catalytic surface at 600 K. At this temperature, the catalytic
surface promotes the oxidation reaction CO(g) +1/202(g) →
CO2(g). Let A=CO, B=O₂, C=CO2. The gas-phase diffusion
coefficients at 1.0 atm and 300 K are DAB = 0.213 cm²/s, DAC=
0.155 cm²/s, DBC=0.166 cm²/s.
a. What are the Schmidt numbers for CO and O₂ mass transfer?
What species (CO, O2, CO₂) is considered the carrier gas?
b. For CO mass transfer, what is the average convective mass-
transfer coefficient (ke) over the 0.50 m length of the catalytic
surface, and the local mass-transfer coefficient (kex) at the far
edge of the catalytic surface (x=L=0.50 m)?
c. Using boundary-layer theory, scale ke for CO mass transfer
to ke for O₂ transfer.
d. At 600 K, the surface reaction constant for the first-order
oxidation reaction with respect to CO concentration is
k, 1.5 cm/s. What is the average molar flux of CO to
the catalytic surface, assuming that the composition of CO
in the bulk gas is maintained at 0.10 mole%?
0.1 mole% CO
2.0 mole% O2
97.9 mole% CO2
600 K, 1.0 atm
V-40 m/s
CO(A) + 1/202(B) CO₂ (C)
NA
CA,
CAS
catalyst surface
1
x = 0
x=L=0.5 m
Transcribed Image Text:is this find in table? if yes which one \mu_CO = 0.01 g/(cm.s) \mu_02 0.02 g/(cm. s) 28.14 Consider the process shown in the figure (next page). A bulk gas stream containing 0.10 mole% of carbon monoxide (CO) gas, 2.0 mole% O2 gas, and 97.9 mole% of CO2 gas flows over a flat catalytic surface of length 0.50 m at a bulk velocity of 40 m/s at 1.0 atm and 600 K. Heat-transfer processes maintain the gas stream and catalytic surface at 600 K. At this temperature, the catalytic surface promotes the oxidation reaction CO(g) +1/202(g) → CO2(g). Let A=CO, B=O₂, C=CO2. The gas-phase diffusion coefficients at 1.0 atm and 300 K are DAB = 0.213 cm²/s, DAC= 0.155 cm²/s, DBC=0.166 cm²/s. a. What are the Schmidt numbers for CO and O₂ mass transfer? What species (CO, O2, CO₂) is considered the carrier gas? b. For CO mass transfer, what is the average convective mass- transfer coefficient (ke) over the 0.50 m length of the catalytic surface, and the local mass-transfer coefficient (kex) at the far edge of the catalytic surface (x=L=0.50 m)? c. Using boundary-layer theory, scale ke for CO mass transfer to ke for O₂ transfer. d. At 600 K, the surface reaction constant for the first-order oxidation reaction with respect to CO concentration is k, 1.5 cm/s. What is the average molar flux of CO to the catalytic surface, assuming that the composition of CO in the bulk gas is maintained at 0.10 mole%? 0.1 mole% CO 2.0 mole% O2 97.9 mole% CO2 600 K, 1.0 atm V-40 m/s CO(A) + 1/202(B) CO₂ (C) NA CA, CAS catalyst surface 1 x = 0 x=L=0.5 m
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