Consider a reaction that is composed of two consecutive elementary reactions: A --ka--> I ---kb---> P...
Consider a reaction that is composed of two consecutive elementary reactions:
A --ka--> I ---kb---> P
With ka = 0.120 min-1, and kb = 0.012 min-1. Assume that the intermediate I is the compound of interest to you. At what time is the concentration of I the greatest, ie. after what time should you stop the reaction to obtain a maximum of I?
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Consider a reaction that is composed of two consecutive
elementary reactions:
A --ka--> I
---kb---> P...
Consider two consecutive first order reactions A k B the [A],to, [B]. = a[A]. (9) What...
Consider two consecutive first order reactions A k B the [A],to, [B]. = a[A]. (9) What is the concentration of B intems of the time (t) and [A]. ? (b) Determine the condition of a that must hold for a maximum of the intermediate concentration of B to exist
P8-3B The following reactions D ku[CA-CD 1A. 1A. ka [CA-C, T/K take place in a batch...
P8-3B The following reactions D ku[CA-CD 1A. 1A. ka [CA-C, T/K take place in a batch reactor. Additional information: k1 31.0 min-1, K1A 10 k2 100 2A CAO- 1 mol/dm3 (Adapted from a problem by John Falconer, University of Colorado.) (a) Plot and analyze conversion and the concentrations of A, D, and U as a function of time. When would you stop the reaction to maximize the concentration of D? Describe what you find. (b) When does the maximum concentration...
Consider the reaction between CO and Oz (carbon monoxide post combustion) described by the elementary reactions...
Consider the reaction between CO and Oz (carbon monoxide post combustion) described by the elementary reactions below. The temperature of the reacting system is 1500 K. The initial concentrations are shown below. Plot the concentration of each species as a function of time. Species: species initial concentration 1000 ppm 0 3% remainder There are four species. Elementary reactions: 1. CO + O2 + CO2 +0 2. Oz+M+0+0+M 3. CO +O+M + CO2 +M k1 = 3.1 X 10'exp(-37.6/RT) k2 =...
Consider the reaction between CO and O2 (carbon monoxide post combustion) described by the elementary reactions...
Consider the reaction between CO and O2 (carbon monoxide post combustion) described by the elementary reactions below. The temperature of the reacting system is 1500 K. The initial concentrations are shown below. Plot the concentration of each species as a function of time. Species: species CO CO2 initial concentration 1000 ppm 0 3% 0 remainder 5 There are four species. Elementary reactions: 1. CO + O2 + CO2 + 0 2. O2 + M +0+0+M k1 = 3.1 X 10^exp(-37.6/RT)...
2. Kinetics of an Oscillating Reaction Oscillating reactions are a special kind of chemical reactions and are characterized by an elementary reaction in which at least one of the reactant is also...
2. Kinetics of an Oscillating Reaction Oscillating reactions are a special kind of chemical reactions and are characterized by an elementary reaction in which at least one of the reactant is also a product. An example of a series of elementary reactions of an oscilating reaction is below: ka (a) Identify the autocatalytic reacton i.e, a reaction in which the products and reactants share atleast one common ingredient) (b) Identify the reactants, intermediates, and products for the overall reaction described...
aalso, is there a way to figure this out without Ka and Kb values? Consider the...
aalso, is there a way to figure this out without Ka and Kb values? Consider the reaction shown. Using your knowledge of relative acid-base strengths and equilibrium, determine what you can about the size of Kc for the reaction. H3ASO3(aq) + HSO3(aq) <=> H2A503 (aq) + H2SO3(aq) Selected Answer: Correct Answer: Kc<1 Kc<1
Rates of Non-elementary reactions Class Activity Consider the following mechanism: 2NO N202 k-1 N...
step by step
Rates of Non-elementary reactions Class Activity Consider the following mechanism: 2NO N202 k-1 NzOz + C12-2+2 NOCI a. What is the net reaction? b. Which of the above species is an intermediate? Why? c. Find the rate of the overall reaction using the steady-state approximation. d. Repeat part (c) using the rate-determining step method, assuming the first-step is fast and at equilibrium and the second step is slow. 2NO N,02 (ast,at equilibrium) k-1 N202 + Cl2-22 NOCI...
k1f M Br2 Br Br M kir (1) + k2,f BrH2 HBr H k2,r (2) + + ka,f HBr Br HBr2 (3) + + Experimentally measured rate expressi...
k1f M Br2 Br Br M kir (1) + k2,f BrH2 HBr H k2,r (2) + + ka,f HBr Br HBr2 (3) + + Experimentally measured rate expression for [HBr] given as below: d [HBr] Aexp [H2] [Br2]1/2 [HBr] 1+ A2expBr2 dt Consider the above elementary reactions mechanism proposed by Bodenstein to explain their experimental findings of the reaction rate of HBr. Reactions 1 and 2 are bi-directional (forward and reverse) while reaction 3 is uni-directional (forward only) as written....
The following reaction mechanisms we have discussed to some degree during class: (kA 0.12 s) (kB...
The following reaction mechanisms we have discussed to some degree during class: (kA 0.12 s) (kB 1.98x10-16 cm3 molecule1 s') (kc 3.23x10-17 cm3 molecule1 s-1) (kD 1.00x10-12 cm3 molecule s1) (A) HNO3 OH NO2 (B) СО + О СО2 (C) NO2+ O3 NO3O2 (D) 2NO2 N2O4 (E) 2NO H2 N20 + H2O 1. 2NO N2O2 (k1,f= 1.00x10-14 cm3 molecule1 s-1) (ki,r 1.00x10-2 s1) (k2 1.00x10-16 cm3 molecule s1) (kF 0.001 s1 2. N2O2 H2 N20H20 (F) O3 hv O2 +...
2. Consider the reactions 1 and 2 shown below. Indicate how the reaction rate for each of the reactions will change...
2. Consider the reactions 1 and 2 shown below. Indicate how the reaction rate for each of the reactions will change your options are: increase, decrease, does NOT change) when the following modifications to the reactions and conditions are introduced: reaction 1 reaction 2 Br CH30 Na CH3OH CH OH as solvent CH3OH is also solvent A. The reaction temperature for both reactions is increased. B. The concentration of the reagent shown above the arrow is increased. C. The concentration...
Consider two consecutive first order reactions A k B the [A],to, [B]. = a[A]. (9) What is the concentration of B intems of the time (t) and [A]. ? (b) Determine the condition of a that must hold for a maximum of the intermediate concentration of B to exist
P8-3B The following reactions D ku[CA-CD 1A. 1A. ka [CA-C, T/K take place in a batch reactor. Additional information: k1 31.0 min-1, K1A 10 k2 100 2A CAO- 1 mol/dm3 (Adapted from a problem by John Falconer, University of Colorado.) (a) Plot and analyze conversion and the concentrations of A, D, and U as a function of time. When would you stop the reaction to maximize the concentration of D? Describe what you find. (b) When does the maximum concentration...
Consider the reaction between CO and Oz (carbon monoxide post combustion) described by the elementary reactions below. The temperature of the reacting system is 1500 K. The initial concentrations are shown below. Plot the concentration of each species as a function of time. Species: species initial concentration 1000 ppm 0 3% remainder There are four species. Elementary reactions: 1. CO + O2 + CO2 +0 2. Oz+M+0+0+M 3. CO +O+M + CO2 +M k1 = 3.1 X 10'exp(-37.6/RT) k2 =...
Consider the reaction between CO and O2 (carbon monoxide post combustion) described by the elementary reactions below. The temperature of the reacting system is 1500 K. The initial concentrations are shown below. Plot the concentration of each species as a function of time. Species: species CO CO2 initial concentration 1000 ppm 0 3% 0 remainder 5 There are four species. Elementary reactions: 1. CO + O2 + CO2 + 0 2. O2 + M +0+0+M k1 = 3.1 X 10^exp(-37.6/RT)...
2. Kinetics of an Oscillating Reaction Oscillating reactions are a special kind of chemical reactions and are characterized by an elementary reaction in which at least one of the reactant is also a product. An example of a series of elementary reactions of an oscilating reaction is below: ka (a) Identify the autocatalytic reacton i.e, a reaction in which the products and reactants share atleast one common ingredient) (b) Identify the reactants, intermediates, and products for the overall reaction described...
step by step
Rates of Non-elementary reactions Class Activity Consider the following mechanism: 2NO N202 k-1 NzOz + C12-2+2 NOCI a. What is the net reaction? b. Which of the above species is an intermediate? Why? c. Find the rate of the overall reaction using the steady-state approximation. d. Repeat part (c) using the rate-determining step method, assuming the first-step is fast and at equilibrium and the second step is slow. 2NO N,02 (ast,at equilibrium) k-1 N202 + Cl2-22 NOCI...
k1f M Br2 Br Br M kir (1) + k2,f BrH2 HBr H k2,r (2) + + ka,f HBr Br HBr2 (3) + + Experimentally measured rate expression for [HBr] given as below: d [HBr] Aexp [H2] [Br2]1/2 [HBr] 1+ A2expBr2 dt Consider the above elementary reactions mechanism proposed by Bodenstein to explain their experimental findings of the reaction rate of HBr. Reactions 1 and 2 are bi-directional (forward and reverse) while reaction 3 is uni-directional (forward only) as written....
The following reaction mechanisms we have discussed to some degree during class: (kA 0.12 s) (kB 1.98x10-16 cm3 molecule1 s') (kc 3.23x10-17 cm3 molecule1 s-1) (kD 1.00x10-12 cm3 molecule s1) (A) HNO3 OH NO2 (B) СО + О СО2 (C) NO2+ O3 NO3O2 (D) 2NO2 N2O4 (E) 2NO H2 N20 + H2O 1. 2NO N2O2 (k1,f= 1.00x10-14 cm3 molecule1 s-1) (ki,r 1.00x10-2 s1) (k2 1.00x10-16 cm3 molecule s1) (kF 0.001 s1 2. N2O2 H2 N20H20 (F) O3 hv O2 +...
2. Consider the reactions 1 and 2 shown below. Indicate how the reaction rate for each of the reactions will change your options are: increase, decrease, does NOT change) when the following modifications to the reactions and conditions are introduced: reaction 1 reaction 2 Br CH30 Na CH3OH CH OH as solvent CH3OH is also solvent A. The reaction temperature for both reactions is increased. B. The concentration of the reagent shown above the arrow is increased. C. The concentration...
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