Homework Answers
First of all we have to understand the basic difference between endothermic aur exothermic reaction ........
In exothermic reaction energy is released that means the energy of product is lower than energy of reactants .
In endothermic reaction ,the energy of product is higher than reactant and energy is absorbed in the reaction
But in the given figure we see that we as the reaction progresses we see that the energy of product is less than energy of reactants
so given equation is exothermic
part 2
as we know the general concept of catalysed reaction ,the catalyst always lowers a activation energy and provides a alternate pathway for reaction to be done ....
So the lower curve that is the curve with the lower activation energy
Green ( bottom one ) is the catalysed reaction
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ing Jump to... vation ene Energy catalyzed nx'n Reaction progress → Is the reaction endothermic or...
For a catalyzed reaction: a) Does the catalyst change the energy of the reactants? Of the...
For a catalyzed reaction: a) Does the catalyst change the energy of the reactants? Of the products? If so, how? b) Does the catalyst change the energy of the transition state? If so, how? c) On the graph below, draw the following: • An exothermic reaction indicate by drawing a solid line) • The same exothermic reaction, but with the addition of a catalyst indicate by drawing this as a dashed line) Energy Reaction Progress
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
44. Based on the following reaction profile: Potential energy m B D Reaction progress la) How...
44. Based on the following reaction profile: Potential energy m B D Reaction progress la) How many intermediates are formed in the reaction A D? 1b) How many transition states are there? 1c) Which step is the slowest? 1d) Is the overall reaction A D exothermic or endothermic? A) 3; 2; AD, exothermic C) 3; 4; BC, exothermic B) 2; 3; B → C, endothermic D) 2; 3; C D endothermic
Potential energy Reaction progress First, indicate on the diagram the activation energy, transition state, and the...
Potential energy Reaction progress First, indicate on the diagram the activation energy, transition state, and the change of enthalpy for every step of this step-wise process, as well as the change in enthalpy for the overall reaction. Then, answer the following questions: (i) How many elementary steps are there in the mechanism of this reaction? (ii) Which of these steps is the rate-determining step? (iii) How many of the individual steps are exothermic? (iv) Is the overall reaction endothermic or...
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 help with #20 and 21. showing all work 20. (6pts) Consider the exothermic (left to right) reaction: 2X60)...
please help with #20 and 21. showing all work
20. (6pts) Consider the exothermic (left to right) reaction: 2X60) - 3Y9) +Zg) State in which direction the equilibrium will shift, if either, when each of the following happens. Explain why: a. increase in volume b. decrease in T c. increase in [X ] 21. (12prs) Sketch the curve for Energy versus Reaction Progress, on the axes provided below. On the same graph, sketch the curve for Energy versus Reaction Progress...
4. Consider the reaction energy diagram below. Consider the "potential energy" to be equal to enthalpy....
4. Consider the reaction energy diagram below. Consider the "potential energy" to be equal to enthalpy. Potential energy Reaction progress First, indicate on the diagram the activation energy, transition state, and the change of enthalpy for every step of this step-wise process, as well as the change in enthalpy for the overall reaction. Then, answer the following questions: (i) How many elementary steps are there in the mechanism of this reaction? (ii) Which of these steps is the rate-determining step?...
c. b. A+B e. a Free Energy d. Progress of the Reaction Given the energy diagram...
c. b. A+B e. a Free Energy d. Progress of the Reaction Given the energy diagram for the reaction of A+B --> C above, what is represented by the arrow marked d.? Select one: O A. Activation energy of the reverse catalyzed reaction o B. Energy difference between the catalyzed and uncatalyzed reactions OC. Activation energy of the reverse uncatalyzed reaction o D. Energy difference between the reactants and products
For the reaction coordinate diagram shown below, which of the following statements are true? Energy Reaction...
For the reaction coordinate diagram shown below, which of the following statements are true? Energy Reaction Coordinate True AErxn = A-C True Reaction is endothermic False Ea(forward) = Ea(reverse) True A represents the energy of the starting materials False Ea(forward) = B-C True Eg of the forward reaction is less than Ea of the reverse reaction Remember that thermodynamic quantities are calculated by products - reactants. The activation energy can be thought of as the barrier height.
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,...
For a catalyzed reaction: a) Does the catalyst change the energy of the reactants? Of the products? If so, how? b) Does the catalyst change the energy of the transition state? If so, how? c) On the graph below, draw the following: • An exothermic reaction indicate by drawing a solid line) • The same exothermic reaction, but with the addition of a catalyst indicate by drawing this as a dashed line) Energy Reaction Progress
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
44. Based on the following reaction profile: Potential energy m B D Reaction progress la) How many intermediates are formed in the reaction A D? 1b) How many transition states are there? 1c) Which step is the slowest? 1d) Is the overall reaction A D exothermic or endothermic? A) 3; 2; AD, exothermic C) 3; 4; BC, exothermic B) 2; 3; B → C, endothermic D) 2; 3; C D endothermic
Potential energy Reaction progress First, indicate on the diagram the activation energy, transition state, and the change of enthalpy for every step of this step-wise process, as well as the change in enthalpy for the overall reaction. Then, answer the following questions: (i) How many elementary steps are there in the mechanism of this reaction? (ii) Which of these steps is the rate-determining step? (iii) How many of the individual steps are exothermic? (iv) Is the overall reaction endothermic or...
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 help with #20 and 21. showing all work
20. (6pts) Consider the exothermic (left to right) reaction: 2X60) - 3Y9) +Zg) State in which direction the equilibrium will shift, if either, when each of the following happens. Explain why: a. increase in volume b. decrease in T c. increase in [X ] 21. (12prs) Sketch the curve for Energy versus Reaction Progress, on the axes provided below. On the same graph, sketch the curve for Energy versus Reaction Progress...
4. Consider the reaction energy diagram below. Consider the "potential energy" to be equal to enthalpy. Potential energy Reaction progress First, indicate on the diagram the activation energy, transition state, and the change of enthalpy for every step of this step-wise process, as well as the change in enthalpy for the overall reaction. Then, answer the following questions: (i) How many elementary steps are there in the mechanism of this reaction? (ii) Which of these steps is the rate-determining step?...
c. b. A+B e. a Free Energy d. Progress of the Reaction Given the energy diagram for the reaction of A+B --> C above, what is represented by the arrow marked d.? Select one: O A. Activation energy of the reverse catalyzed reaction o B. Energy difference between the catalyzed and uncatalyzed reactions OC. Activation energy of the reverse uncatalyzed reaction o D. Energy difference between the reactants and products
For the reaction coordinate diagram shown below, which of the following statements are true? Energy Reaction Coordinate True AErxn = A-C True Reaction is endothermic False Ea(forward) = Ea(reverse) True A represents the energy of the starting materials False Ea(forward) = B-C True Eg of the forward reaction is less than Ea of the reverse reaction Remember that thermodynamic quantities are calculated by products - reactants. The activation energy can be thought of as the barrier height.
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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