Homework 8-4 Energy Diagrams and Mechanisms Energy Diagrams and Mechanisms Reaction Energy Diagrams show the change...
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...
The diagram shows the energy change over the course of a
reaction.
The diagram shows the energy change over the course of a reaction. Is the reaction endothermic or exothermic? O endothermic O exothermic Energy (kJ/mol) What is the activation energy of the reaction? Reaction progress activation energy: kJ/mol
3. Look at Figure 16.22 (p.727), the reaction energy diagrams for the two step reactions of a) NO, and F, and b) NO and O2 Write down the mechanisms for both reactions, and these mechanisms based on the corresponding reaction energy diagrams. IMG_0338.jpg v Q Search Depicting a Multistep Mechanism with a Reaction Energy Diagram Figu re 16.22 shows reaction energy diagrams for two reactions, each of which has a two-step mechanism, shown below the diagram. The reaction of NO,...
Energy diagrams for two reactions are shown. Energy (kJ/mol Energy (kJ/mol) Reaction progress Reaction A Reaction progress Reaction B What is the heat of reaction for Reaction A? What is the heat of reaction for Reaction B? AHA = AHxnB = mol What is the activation energy for Reaction A? What is the activation energy for Reaction B? Earn A = mol mol
Energy diagrams for two reactions are shown. 1501 150 Energy (kJ/mol) Energy (kJ/mol Reaction progress Reaction progress Reaction A Reaction B What is the heat of reaction for Reaction A? What is the heat of reaction for Reaction B? ΔΗχη Α = kJ AHxB= kᎫ mol mol What is the activation energy for Reaction A? What is the activation energy for Reaction B? Earxn A = kJ Ea rxnB = mol mol
Part A Lof methane? Buring 1.00 mol of methane releases 803 kJ of energy. How much energy is released by burning 214 CH, (g) +202(g) + CO2(g) + 2H2O(g) 803 kJ Express your answer with the appropriate units. E - 177746.3 kJ Submit Previous Answers Request Answe X Incorrect, Try Again; One attempt remaining Provide Feedback 33/modules/item/1324 Modules > Week Eleven > Homework 9 Homework 9 Item 18 Part The reaction energy diagrams for an endothermic and an exothermic reaction...
1. Based on the following energy diagram: free energy, kJ/mol reaction coordinate C. D. The reaction is exothermic and the first step is rate limiting. The reaction is exothermic and the second step is rate limiting. The reaction is endothermic and the first step is rate limiting. The reaction is endothermic and the second step is rate limiting. The reaction is one step endothermic.
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
4. Which of the following energy diagrams corresponds to a one-step exothermic reaction with a high energy of activation? nat A. A B.B C.C D.D E. E
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14 14) (a) For the reaction of CH) + C&H) - CH10. The activation energy (E.) for the forward readtion is 115 kJ/mol, and the activation for the reverse reaction (decomposition of cyclohexene to ethylene and butadiene) is 287 mol. Draw the energy diagram (potential energy versus progress of the reaction) (b) Calculate the heat of reaction, a H . for the forward reaction Show it on the graph. Is the reaction endothermic or exothermic?...