Consider the three-step mechanism for the reaction of A through intermediates B and C to produce...
Consider the three-step mechanism for the reaction of A through
intermediates B and C to produce D shown below.
A → B Ea = 6 kcal/mol, ΔH° = 4 kcal/mol
B → C Ea = 4 kcal/mol, ΔH° = -10 kcal/mol
C → D Ea = 13 kcal/mol, ΔH° = -6 kcal/mol
A. draw and label and energy diagram.
B. what is the overall enthalpy?
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Consider the three-step mechanism for the reaction of A through
intermediates B and C to produce...
Question 14 Question 14 Answer: Consider the three-step mechanism for the reaction of A through intermediates B a ro...
Question 14
Question 14
Answer: Consider the three-step mechanism for the reaction of A through intermediates B a roduce D shown below. B B-C C D E = 15 kcal/mol, AH - 13 kcal/mol E = 10 kcal/mol, AH° = -6 kcal/mol Eg = 2 kcal/mol, AH° = -20 kcal/mol What's the enthalpy difference between reactant C and intermediate D? Answer: 14) What is the name of the major monobrominated product which results when 2-tert: butylhexane is subjected to Bry/hv...
Name: 17. Consider the two step reaction A B-C (shown below). Which stepp is the rate...
Name: 17. Consider the two step reaction A B-C (shown below). Which stepp is the rate determining step and is the overall reaction exothermic or endothermic? (4 pts) Energy A Reaction Coordinate 18. The following is an energy vs. reaction coordinate graph for a radical bromination. (6 pts) a. Give the ratios of the tertiary to primary product b. Using the graph explain them how this occurs c. Using the graph what does the Hammond postulate tell us about the...
3—Part II: For the following hypothetical mechanism Step (1) slow 2 A+ E + C +...
3—Part II: For the following hypothetical mechanism Step (1) slow 2 A+ E + C + F Ea = 40 kJ, AH = + 15 kJ Step (2) fast 3 B+F → D+E Ea = 15 kJ, AH = -20 kJ Draw the energy diagram for this 2-step mechanism. Label all parts of the diagram and locate (i.e. indicate) all energy values on your diagram. Calculate the overall enthalpy change for this reaction. Note: must set scale & honour proportionality.
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...
2. Draw a labeled reaction-energy diagram (graph of potential energy versus reaction coordinate) for a three-step...
2. Draw a labeled reaction-energy diagram (graph of potential energy versus reaction coordinate) for a three-step overall exothermic reaction with the A. first step being the rate-determining step B. third step being the rate-determining step Label each graph with the following: reactants (r), transition states (ts.), intermediates (int.), products (p). activation energies (Ea), and overall standard heat of reaction (AH). (Note: Each subscript, x, needs to be a number that refers to the appropriate primary mechanistic step. For example, Ea,...
3) The starting materials, two intermediates, and the product of the three-step mechanism are show below....
3) The starting materials, two intermediates, and the product of the three-step mechanism are show below. Add the curved electron arrows to explain the mechanism below Draw the energy diagram for the reaction to the right. This wl include the two intermediates and three transitions states of the correct relative energies. Consider the rate determining step and the stability of the intermediates to draw it accurately Itermediate stability follows the same rules E as good Lewis structures - more stable...
Can you please answer the following questions? The rate constant, k for the reaction below A...
Can you please answer the following questions?
The rate constant, k for the reaction below A - Products is 2.8 x 10 sat 80°C. If the initial concentration of A is 0.25M, what is the concentration after 50 s? The oxidation reaction of thallium (I) by cerium (IV) is believed to occur via three steps. The rate low for the reaction is: rate = k[Ce [Mn2") ce". Mne - Cen ! ce". Mn. Cell. Mn TI". Mn* - TI. Mn?...
2. Consider this two step mechanism for a reaction… Step 1 NO2 + O3 --> NO3 ...
2. Consider this two step mechanism for a reaction… Step 1 NO2 + O3 --> NO3 + O2 slow; rate determining step Step 2 NO3 + NO2 --> N2O5 fast a. What is the overall reaction? b. Identify the intermediates in the mechanism. c. Write the rate law expression for each step of the mechanism including any reversible reactions. c. What is the predicted rate law expression? Be sure to only list reactants from the overall equation and not intermediates...
the answers i circled are incorrect except for 19. can you please tell me why this...
the answers i circled are incorrect except for 19. can you
please tell me why this is correct. can you give me the correct
answers and explain why?
actions usually proceed with amounts of inversion and retention at the center undergoing sustitution more inversion than retention at the center undergoing substitution y more retention then in version at the center undergoing substitution lete inversion at the center undergoing sostituti plete retention at the center undergoing substitution Which of the following...
20) Part 1: Provide a step-by-step mechanism (using arrows to show electron movement) to show how...
20) Part 1: Provide a step-by-step mechanism (using arrows to show electron movement) to show how the below reaction occurs. Be sure to draw ALL intermediates and movement of electrons to appropriately justify the given product. NOTE: It is not necessary for you to add other reagents that are not shown OR include other possible products that can be formed under the given reaction conditions. (4 points) CI OH + H2O Part B: Clearly draw and fully label an energy...
Question 14
Question 14
Answer: Consider the three-step mechanism for the reaction of A through intermediates B a roduce D shown below. B B-C C D E = 15 kcal/mol, AH - 13 kcal/mol E = 10 kcal/mol, AH° = -6 kcal/mol Eg = 2 kcal/mol, AH° = -20 kcal/mol What's the enthalpy difference between reactant C and intermediate D? Answer: 14) What is the name of the major monobrominated product which results when 2-tert: butylhexane is subjected to Bry/hv...
Name: 17. Consider the two step reaction A B-C (shown below). Which stepp is the rate determining step and is the overall reaction exothermic or endothermic? (4 pts) Energy A Reaction Coordinate 18. The following is an energy vs. reaction coordinate graph for a radical bromination. (6 pts) a. Give the ratios of the tertiary to primary product b. Using the graph explain them how this occurs c. Using the graph what does the Hammond postulate tell us about the...
3—Part II: For the following hypothetical mechanism Step (1) slow 2 A+ E + C + F Ea = 40 kJ, AH = + 15 kJ Step (2) fast 3 B+F → D+E Ea = 15 kJ, AH = -20 kJ Draw the energy diagram for this 2-step mechanism. Label all parts of the diagram and locate (i.e. indicate) all energy values on your diagram. Calculate the overall enthalpy change for this reaction. Note: must set scale & honour proportionality.
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...
2. Draw a labeled reaction-energy diagram (graph of potential energy versus reaction coordinate) for a three-step overall exothermic reaction with the A. first step being the rate-determining step B. third step being the rate-determining step Label each graph with the following: reactants (r), transition states (ts.), intermediates (int.), products (p). activation energies (Ea), and overall standard heat of reaction (AH). (Note: Each subscript, x, needs to be a number that refers to the appropriate primary mechanistic step. For example, Ea,...
3) The starting materials, two intermediates, and the product of the three-step mechanism are show below. Add the curved electron arrows to explain the mechanism below Draw the energy diagram for the reaction to the right. This wl include the two intermediates and three transitions states of the correct relative energies. Consider the rate determining step and the stability of the intermediates to draw it accurately Itermediate stability follows the same rules E as good Lewis structures - more stable...
Can you please answer the following questions?
The rate constant, k for the reaction below A - Products is 2.8 x 10 sat 80°C. If the initial concentration of A is 0.25M, what is the concentration after 50 s? The oxidation reaction of thallium (I) by cerium (IV) is believed to occur via three steps. The rate low for the reaction is: rate = k[Ce [Mn2") ce". Mne - Cen ! ce". Mn. Cell. Mn TI". Mn* - TI. Mn?...
the answers i circled are incorrect except for 19. can you
please tell me why this is correct. can you give me the correct
answers and explain why?
actions usually proceed with amounts of inversion and retention at the center undergoing sustitution more inversion than retention at the center undergoing substitution y more retention then in version at the center undergoing substitution lete inversion at the center undergoing sostituti plete retention at the center undergoing substitution Which of the following...
20) Part 1: Provide a step-by-step mechanism (using arrows to show electron movement) to show how the below reaction occurs. Be sure to draw ALL intermediates and movement of electrons to appropriately justify the given product. NOTE: It is not necessary for you to add other reagents that are not shown OR include other possible products that can be formed under the given reaction conditions. (4 points) CI OH + H2O Part B: Clearly draw and fully label an energy...
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