Homework Answers
1. The reaction D will occur more rapidly if the factors like concentration and temperature is kept constant, because the difference between the starting point and the final product is high. This means the more stable product is formed and therefore the reaction will occur more rapidly.
2. Reaction B will favor the product at equilibrium, because in this the energy of reactant and product both are same.
3. Process A and D exhibit intermediate and transition state.
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Name: Problem of the Day 19 Potential energy Potential energy Potential energy Potential energy Reaction Reaction...
6.26 Consider the folloving four energy diagrams: Potential energy Potential energy Reaction coordinate Reaction coordinate Potential...
6.26 Consider the folloving four energy diagrams: Potential energy Potential energy Reaction coordinate Reaction coordinate Potential energy Potential energy n Reaction coordinate Reaction coordinate (a) Which diagrams correspond with a two-step mechanism? (b) Which diagrams correspond with a one-step mechanism? (c) Compare energy diagrams A and C. Which has a relatively larger E.? (d) Compare diagrams A and C. Which has a negative AG? (e) Compare diagrams A and D. Which has a positive AG? (f) Compare all four energy...
6.27 Consider the following four energy diagrams: Potential energy Potential energy Reaction coordinate Reaction coordinate Potential...
6.27 Consider the following four energy diagrams: Potential energy Potential energy Reaction coordinate Reaction coordinate Potential energy =th -th Potential energy Reaction coordinate Reaction coordinate (a) Which diagrams correspond with a two-step mechanism? (b) which diagrams correspond with a one-step mechanism? (C) Compare energy diagrams A and C. Which has a relatively larger E,? (d) Compare diagrams A and C. Which has a negative AG? (e) Compare diagrams A and D. Which has a positive AG? (1) Compare all four...
Consider the two reaction progress diagrams below: Activated complex Activated complex Potential energy Potential energy Reaction...
Consider the two reaction progress diagrams below: Activated complex Activated complex Potential energy Potential energy Reaction coordinate Reaction coordinate a) Which diagram (left or right) represents an exothermic reaction? Which represents an endothermic reaction? Explain. b) Does a positive activation energy (E,> 0 always denote an endothermic reaction? Explain
1. 2. Question 10 1 pts The graphs show potential energy diagrams for the same reaction...
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Question 10 1 pts The graphs show potential energy diagrams for the same reaction at T-900. K R P 1) uncatalysed process; 2) catalysed reaction Uncatalyzed Reaction 400 300 reactants 200 100 products Reaction coordinate Uncatalysed reaction: Potential Energy (P.E.) vs reaction coordinate. Energy is measured from O to 400. kJ, and the reaction coordinate is associated with the evolution of the reaction. The PE of the reactants is 225 kJ. Then the energy grows to 400. kJ,...
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...
Question 2 Shown below is the reaction profile for a certain reaction. potential energy im course...
Question 2 Shown below is the reaction profile for a certain reaction. potential energy im course of reaction (reaction coordinate) How many steps are in this reaction? [Select] How many transition states are featured in this reaction? (Select] Which intermediate is highest in energy? (Select] Is AE positive or negative for this reaction? [Select] Which step is the rate-determining step? [ Select]
2. Suppose that you are asked to find the reaction energy and activation energy of a...
2. Suppose that you are asked to find the reaction energy and activation energy of a tautomerization reaction A → B. It is known that B is less stable than A. (60) EN-NH₂ NH2 OH so a. How will you do it? Draw the potential energy profile. In the profile, what do you think the reaction coordinate is? Draw the approximate structure of the transition state geometry. Explain the reason. Send the .gzmat of the approximate transition state structure via...
Consider the reaction coordinate diagram below and select which statement is FALSE, potential energy reaction coordinate...
Consider the reaction coordinate diagram below and select which statement is FALSE, potential energy reaction coordinate (progress of reaction) The reaction is spontaneous. The reaction is reactant favored. The equilibrium constant, K, for this reaction is greater than 1. AG for this reaction is negative.
11) Consider the potential energy diagrams for two types of reactions Type-1-Reaction Type-2-Reaction Reaction progress ion...
11) Consider the potential energy diagrams for two types of reactions Type-1-Reaction Type-2-Reaction Reaction progress ion According to the two given diagrams, which of the following statements is true A) If the temperature decreases, then the equilibrium constant increases in Type-1-Reaction. B) If the temperature decreases, then the equilibrium constant increases in Type-2-Reaction C) If the temperature increases, then it yields more products in Type-1-Reaction. D) If the temperature increases, then it yields less products in Type-2-Reaction E) None of...
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,...
6.26 Consider the folloving four energy diagrams: Potential energy Potential energy Reaction coordinate Reaction coordinate Potential energy Potential energy n Reaction coordinate Reaction coordinate (a) Which diagrams correspond with a two-step mechanism? (b) Which diagrams correspond with a one-step mechanism? (c) Compare energy diagrams A and C. Which has a relatively larger E.? (d) Compare diagrams A and C. Which has a negative AG? (e) Compare diagrams A and D. Which has a positive AG? (f) Compare all four energy...
6.27 Consider the following four energy diagrams: Potential energy Potential energy Reaction coordinate Reaction coordinate Potential energy =th -th Potential energy Reaction coordinate Reaction coordinate (a) Which diagrams correspond with a two-step mechanism? (b) which diagrams correspond with a one-step mechanism? (C) Compare energy diagrams A and C. Which has a relatively larger E,? (d) Compare diagrams A and C. Which has a negative AG? (e) Compare diagrams A and D. Which has a positive AG? (1) Compare all four...
Consider the two reaction progress diagrams below: Activated complex Activated complex Potential energy Potential energy Reaction coordinate Reaction coordinate a) Which diagram (left or right) represents an exothermic reaction? Which represents an endothermic reaction? Explain. b) Does a positive activation energy (E,> 0 always denote an endothermic reaction? Explain
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Question 10 1 pts The graphs show potential energy diagrams for the same reaction at T-900. K R P 1) uncatalysed process; 2) catalysed reaction Uncatalyzed Reaction 400 300 reactants 200 100 products Reaction coordinate Uncatalysed reaction: Potential Energy (P.E.) vs reaction coordinate. Energy is measured from O to 400. kJ, and the reaction coordinate is associated with the evolution of the reaction. The PE of the reactants is 225 kJ. Then the energy grows to 400. kJ,...
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...
Question 2 Shown below is the reaction profile for a certain reaction. potential energy im course of reaction (reaction coordinate) How many steps are in this reaction? [Select] How many transition states are featured in this reaction? (Select] Which intermediate is highest in energy? (Select] Is AE positive or negative for this reaction? [Select] Which step is the rate-determining step? [ Select]
2. Suppose that you are asked to find the reaction energy and activation energy of a tautomerization reaction A → B. It is known that B is less stable than A. (60) EN-NH₂ NH2 OH so a. How will you do it? Draw the potential energy profile. In the profile, what do you think the reaction coordinate is? Draw the approximate structure of the transition state geometry. Explain the reason. Send the .gzmat of the approximate transition state structure via...
Consider the reaction coordinate diagram below and select which statement is FALSE, potential energy reaction coordinate (progress of reaction) The reaction is spontaneous. The reaction is reactant favored. The equilibrium constant, K, for this reaction is greater than 1. AG for this reaction is negative.
11) Consider the potential energy diagrams for two types of reactions Type-1-Reaction Type-2-Reaction Reaction progress ion According to the two given diagrams, which of the following statements is true A) If the temperature decreases, then the equilibrium constant increases in Type-1-Reaction. B) If the temperature decreases, then the equilibrium constant increases in Type-2-Reaction C) If the temperature increases, then it yields more products in Type-1-Reaction. D) If the temperature increases, then it yields less products in Type-2-Reaction E) None of...
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,...
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