CRE Test-1-sol

# CRE Test-1-sol - 2 Determine the time required for 80...

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1) The following irreversible reaction takes place in a CSTR: It takes place under the following conditions: F To = 40 mol/min C Ao = 2 mol/dm 3 The feed is 75 mol% A k(400 K) = 0.1/min V = 500 dm 3 and T = 400 K X=? This reaction follows the first order rate law: -r A = kC A 4 /min What is the conversion? Answer: We begin with the design equation for a CSTR is: we get the equation for the conversion: The problem gave us every variable except for F Ao . F Ao is just the mole fraction of A (x A ) multiplied by the total initial flow rate (F To ).

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Then, we substitute for our variables and calculate a conversion of:
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Unformatted text preview: 2) Determine the time required for 80% conversion of 7.5 mol A in a 15-L constant-volume batch reactor operating isothermally at 300 K. The reaction is first-order with respect to A, with k A = 0.05 min-1 at 300 K. 3) A liquid-phase double-replacement reaction between bromine cyanide (A) and methylamine takes place in a PFR at 10°C and 101 kPa. The reaction is first-order with respect to each reactant, with k A = 2.22 L mol-1 s-1 . If the residence or space time is 4 s, and the inlet concentration of each reactant is 0.10 mol L-1 , determine the concentration of bromine cyanide at the outlet of the reactor. Answer:...
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## This note was uploaded on 06/06/2011 for the course CHEM 3040 taught by Professor Reddy during the Spring '10 term at Taylor's.

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CRE Test-1-sol - 2 Determine the time required for 80...

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