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CHEM 2102 Test 1 Fal1 2014 Time allowed: 1 hr 15 min 15)...
Model 1 - Potential Energy Diagrams 1) The energy (enthalpy) change of a reaction can be...
Model 1 - Potential Energy Diagrams 1) The energy (enthalpy) change of a reaction can be determined by the following expression: Activated Complex Transition State AH = Energy products - Energy reactants Activation Energy, E Reactants Consider the energy change for the reaction in Model 1 (the graph to the left). Potential Energy (kJ/mol) Energy change (AH) Products a) The energy change shown is (positive/negative). b) This reaction is (endothermic / exothermic). c) These (reactants / transition state) has more...
Please answer #7 and #8 only, Thank you! Ozone Decomposition: Ozone formation is faster during the...
Please answer #7 and #8 only,
Thank you!
Ozone Decomposition: Ozone formation is faster during the day due to the action of sunlight on NO2 molecules. Thus, Os(g) accumulates in the troposphere and its concentration peaks sometime in the afternoon. During the night, ozone reacts with NO(g) according to the following reaction: NO(g) + Os(g) = NO2(g) + Ox(g). This is a single-step process with an activation energy E. = 12.5 kl/mol and a AH..=-199.5 kJ/mol. 5. Build potential energy...
Name Wkst #16 CHEM& 162 1. Consider the following proposed reaction mechanism. 12 = 21 1...
Name Wkst #16 CHEM& 162 1. Consider the following proposed reaction mechanism. 12 = 21 1 + O₂ → 10₂ + 0 0+ 03 - 202 1 +10, -12 + O2 A. What is the overall reaction? B. What are the intermediates and catalysts? Intermediates: Catalysts: C. If the first step is in equilibrium and the second step is slow. what is the overall rate law? Remember, intermediates cannot appear in the final rate law! Rate = D. On the...
Please answer #5 and #6 Ozone Decomposition: Ozone formation is faster during the day due to...
Please answer #5 and #6
Ozone Decomposition: Ozone formation is faster during the day due to the action of sunlight on NO2 molecules. Thus, O.(g) accumulates in the troposphere and its concentration peaks sometime in the afternoon. During the night, ozone reacts with NO(g) according to the following reaction: NO(g) + Ox(g) = NO:(g) + Ox(). This is a single-step process with an activation energy E. = 12.5kl/mol and a AH.n=-199.5 kJ/mol. 5. Build potential energy diagram that represents the...
Ozone Decomposition: Ozone formation is faster during the day due to the action of sunlight on...
Ozone Decomposition: Ozone formation is faster during the day due to the action of sunlight on NO, molecules. Thus, Os(g) accumulates in the troposphere and its concentration peaks sometime in the afternoon. During the night, ozone reacts with NO(g) according to the following reaction: NO(g) + O.(B) NO,() + O2(g). This is a single-step process with an activation energy E. = 12.5 kJ/mol and a AH-199.5 kJ/mol. PPB 5. Build potential energy diagram that represents the transformation of reactants to...
II have posted this question yesterday, but no body answered it. Can somebody help me please...
II have posted this question yesterday, but no body answered it.
Can somebody help me please with these four questions. I apologies
because they are 4 but they all based on each other and cannot post
them separately. So I hope some body help me and really need #8
Ozone Decomposition: Ozone formation is faster during the day due to the action of sunlight on NO, molecules. Thus, Os() accumulates in the troposphere and its concentration peaks sometime in the...
3. Please answer the following questions concerning the two energy diagrams depicted below. (10 pts) Energy...
3. Please answer the following questions concerning the two energy diagrams depicted below. (10 pts) Energy Diagram A 30 25 20 15 10 0 10 15 20 25 Energy Diagram B 30 25 20 15 10 15 20 25 10 (a) Do the energy diagrams represent concerted or stepwise reactions? Concerted (b) Label the axes, the reactants (R), products (P), any intermediates (), activation energy (E), enthalpy of reaction (AH), and transition state(s) (TS) on the above diagrams. (c) Do...
CHEM 212 Practice Sheet la) Sketch an energy diagram for a chemical reaction that is exothermic...
CHEM 212 Practice Sheet la) Sketch an energy diagram for a chemical reaction that is exothermic (AH--200 kJ/mol. The reaction is single-step and has an activation energy of 100 kJ/mol. 1b) Now, draw an energy diagram for the same chemical reaction upon addition of a catalyst. 2) At 1000 K, K, -1.85 for the reaction SO, (g) + 0(8) SO, (g) a) Write an expression for the equilibrium constant, K b) What is the value of K, for the reaction...
1. Draw all of the constitutional isomers that are formed in each elimination reaction and label...
1. Draw all of the constitutional isomers that are formed in each elimination reaction and label the mechanism as E2 or E1. a. 2-bromo butane reacts with methoxide b. 1-chloro-1-ethyl 2 methyl cyclopentane reacts with water 2. For which reaction mechanism are each of the following statements true? Mechanism S1, S2, E1 or E2. A statement may be true for one or more mechanisms a. The mechanism involves carbocation intermediates b. The mechanism has two steps C. The reaction rate...
(1) Consider SO2 (g) + 2H2S(g) = 3(g) + 2H2O(1) AH : (i) SO2 (g) =...
(1) Consider SO2 (g) + 2H2S(g) = 3(g) + 2H2O(1) AH : (i) SO2 (g) = -296.8 KJ/mol (ii) H2S (g) = -20.4 KJ/mol (iii) H20 (1) = -285.84 KJ/mol AH for the above reaction is: (a) 234.08 KJ (b)-234.08 KJ (c) 31.36 kJ (d) -31.36 KJ (e) None (2) The above reaction is (a) Endothermic (b) Exothermic (c) entropic (3) in k = Ae Ea/RT, Ea is (a) Activation Energy (b) 8.314 J/mol.K (c) Rate constant (4) In a...
Model 1 - Potential Energy Diagrams 1) The energy (enthalpy) change of a reaction can be determined by the following expression: Activated Complex Transition State AH = Energy products - Energy reactants Activation Energy, E Reactants Consider the energy change for the reaction in Model 1 (the graph to the left). Potential Energy (kJ/mol) Energy change (AH) Products a) The energy change shown is (positive/negative). b) This reaction is (endothermic / exothermic). c) These (reactants / transition state) has more...
Please answer #7 and #8 only,
Thank you!
Ozone Decomposition: Ozone formation is faster during the day due to the action of sunlight on NO2 molecules. Thus, Os(g) accumulates in the troposphere and its concentration peaks sometime in the afternoon. During the night, ozone reacts with NO(g) according to the following reaction: NO(g) + Os(g) = NO2(g) + Ox(g). This is a single-step process with an activation energy E. = 12.5 kl/mol and a AH..=-199.5 kJ/mol. 5. Build potential energy...
Name Wkst #16 CHEM& 162 1. Consider the following proposed reaction mechanism. 12 = 21 1 + O₂ → 10₂ + 0 0+ 03 - 202 1 +10, -12 + O2 A. What is the overall reaction? B. What are the intermediates and catalysts? Intermediates: Catalysts: C. If the first step is in equilibrium and the second step is slow. what is the overall rate law? Remember, intermediates cannot appear in the final rate law! Rate = D. On the...
Please answer #5 and #6
Ozone Decomposition: Ozone formation is faster during the day due to the action of sunlight on NO2 molecules. Thus, O.(g) accumulates in the troposphere and its concentration peaks sometime in the afternoon. During the night, ozone reacts with NO(g) according to the following reaction: NO(g) + Ox(g) = NO:(g) + Ox(). This is a single-step process with an activation energy E. = 12.5kl/mol and a AH.n=-199.5 kJ/mol. 5. Build potential energy diagram that represents the...
Ozone Decomposition: Ozone formation is faster during the day due to the action of sunlight on NO, molecules. Thus, Os(g) accumulates in the troposphere and its concentration peaks sometime in the afternoon. During the night, ozone reacts with NO(g) according to the following reaction: NO(g) + O.(B) NO,() + O2(g). This is a single-step process with an activation energy E. = 12.5 kJ/mol and a AH-199.5 kJ/mol. PPB 5. Build potential energy diagram that represents the transformation of reactants to...
II have posted this question yesterday, but no body answered it.
Can somebody help me please with these four questions. I apologies
because they are 4 but they all based on each other and cannot post
them separately. So I hope some body help me and really need #8
Ozone Decomposition: Ozone formation is faster during the day due to the action of sunlight on NO, molecules. Thus, Os() accumulates in the troposphere and its concentration peaks sometime in the...
3. Please answer the following questions concerning the two energy diagrams depicted below. (10 pts) Energy Diagram A 30 25 20 15 10 0 10 15 20 25 Energy Diagram B 30 25 20 15 10 15 20 25 10 (a) Do the energy diagrams represent concerted or stepwise reactions? Concerted (b) Label the axes, the reactants (R), products (P), any intermediates (), activation energy (E), enthalpy of reaction (AH), and transition state(s) (TS) on the above diagrams. (c) Do...
CHEM 212 Practice Sheet la) Sketch an energy diagram for a chemical reaction that is exothermic (AH--200 kJ/mol. The reaction is single-step and has an activation energy of 100 kJ/mol. 1b) Now, draw an energy diagram for the same chemical reaction upon addition of a catalyst. 2) At 1000 K, K, -1.85 for the reaction SO, (g) + 0(8) SO, (g) a) Write an expression for the equilibrium constant, K b) What is the value of K, for the reaction...
1. Draw all of the constitutional isomers that are formed in each elimination reaction and label the mechanism as E2 or E1. a. 2-bromo butane reacts with methoxide b. 1-chloro-1-ethyl 2 methyl cyclopentane reacts with water 2. For which reaction mechanism are each of the following statements true? Mechanism S1, S2, E1 or E2. A statement may be true for one or more mechanisms a. The mechanism involves carbocation intermediates b. The mechanism has two steps C. The reaction rate...
(1) Consider SO2 (g) + 2H2S(g) = 3(g) + 2H2O(1) AH : (i) SO2 (g) = -296.8 KJ/mol (ii) H2S (g) = -20.4 KJ/mol (iii) H20 (1) = -285.84 KJ/mol AH for the above reaction is: (a) 234.08 KJ (b)-234.08 KJ (c) 31.36 kJ (d) -31.36 KJ (e) None (2) The above reaction is (a) Endothermic (b) Exothermic (c) entropic (3) in k = Ae Ea/RT, Ea is (a) Activation Energy (b) 8.314 J/mol.K (c) Rate constant (4) In a...
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