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Unformatted text preview: 7.1. ISOTHERMAL, ISOCHORIC KINETICS 235 O 2 O 10 Minus 11 10 Minus 10 10 Minus 9 10 Minus 8 10 Minus 7 10 Minus 6 t LParen1 s RParen1 0.00100 0.00050 0.00150 0.00070 LBracket1 O RBracket1 , LBracket1 O2 RBracket1 LParen1 mole Slash1 cc RParen1 Figure 7.2: Molar concentrations versus time for oxygen dissociation problem. Then the differential equation system becomes d ρ O dt = − (1 . 16 × 10 14 ) ρ 2 O ( ρ O + ρ O 2 ) + (1 . 77548 × 10 10 ) ρ O 2 ( ρ O + ρ O 2 ) , (7.50) d ρ O 2 dt = (5 . 80 × 10 13 ) ρ 2 O ( ρ O + ρ O 2 ) − (8 . 8774 × 10 9 ) ρ O 2 ( ρ O + ρ O 2 ) , (7.51) ρ O (0) = 0 . 001 mole cm 3 , (7.52) ρ O 2 (0) = 0 . 001 mole cm 3 . (7.53) These nonlinear ordinary differential equations are in a standard form for a wide variety of numerical software tools. Solution of such equations are not the topic of these notes. 7.1.1.1.2.1 Species concentration versus time A solution was obtained numeri cally, and a plot of ρ O ( t ) and ρ O 2 ( t ) is given in Figure 7.2. Note that significant reaction does) is given in Figure 7....
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This note was uploaded on 11/26/2011 for the course EGN 3381 taught by Professor Parksou during the Fall '11 term at FSU.
 Fall '11
 ParkSou
 Dynamics

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