Homework Answers
a)
For left diagram:
Energy of product is less than energy of reactant.
So, energy is released during the reaction.
So, this is exothermic reaction.
For right diagram:
Energy of product is more than energy of reactant.
So, energy is absorbed during the reaction.
So, this is endothermic reaction.
Answer:
Exothermic: left
Endothermic: right
b)
Endothermic reaction and exothermic reaction depends on the energy of reactant and product. They do not depend on activation energy.
So, a reaction with positive Ea can be Exothermic or Endothermic.
Answer: No
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Consider the two reaction progress diagrams below: Activated complex Activated complex Potential energy Potential energy Reaction...
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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 following diagram shows the energy of a reaction as the reaction progresses. Label each of...
The following diagram shows the energy of a reaction as the reaction progresses. Label each of the following in the energy diagram by matching and answer whether this reaction is endothermic or exothermic. 1 [ Choose ] product reactant endothermic exothermic enthalpy of reaction activation energy activated complex (transition state) 2 [ Choose...
(8 points) On the diagram below, label the following: Reactants, Products, Activated Complex, Activation Energy (E.),...
(8 points) On the diagram below, label the following: Reactants, Products, Activated Complex, Activation Energy (E.), and Enthalpy of the Reaction (AH). State if the reaction is endothermic or exothermic. Explain how you arrived at your answer. 250 2001 PE Reaction pathway
Please Explain the Answer Question 2 (Parts A-C, 20 points): Use the energy diagrams shown below...
Please Explain the Answer
Question 2 (Parts A-C, 20 points): Use the energy diagrams shown below to answer parts A and B. on Products Rectants Energy Products Reactants Reaction coordinate (a) Highly exothermic reaction Reaction coordinate (b) Highly endothermic reaction A) Does the structure of the transition state in the endothermic reaction resemble that of the reactants or the products? B) Which energy diagram best represents the rate determining step of free radical bromination (Br,, light) of butane: the one...
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 20 Energy Diagram B (a) Do the energy diagrams represent concerted or stepwise reactions? (b) Label the axes, the reactants (R), products (P), any intermediates (1), activation energy (E.), enthalpy of reaction (AH"), and transition state(s) (TS) on the above diagrams. (c) Do the energy diagrams represent endothermic or exothermic reactions? (d) Which energy diagram represents the faster reaction? (e) Which energy...
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 Energy Diagram B (a) Do the energy diagrams represent concerted or stepwise reactions? (b) Label the axes, the reactants (R), products (P), any intermediates (1), activation energy (E.), enthalpy of reaction (AH'), and transition state(s) (TS) on the above diagrams. (C) Do the energy diagrams represent endothermic or exothermic reactions? (d) Which energy diagram represents the faster reaction? (e) Which energy diagram...
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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...
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...
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Label the energy diagrams with the following: Reactants, Products, Activation energy (include arrow) Heat absorbed or Heat released (include arrow) Potential Energy Potential Energy Reaction Progress Exothermic reaction Reaction Progress Endothermic reaction
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...
(8 points) On the diagram below, label the following: Reactants, Products, Activated Complex, Activation Energy (E.), and Enthalpy of the Reaction (AH). State if the reaction is endothermic or exothermic. Explain how you arrived at your answer. 250 2001 PE Reaction pathway
Please Explain the Answer
Question 2 (Parts A-C, 20 points): Use the energy diagrams shown below to answer parts A and B. on Products Rectants Energy Products Reactants Reaction coordinate (a) Highly exothermic reaction Reaction coordinate (b) Highly endothermic reaction A) Does the structure of the transition state in the endothermic reaction resemble that of the reactants or the products? B) Which energy diagram best represents the rate determining step of free radical bromination (Br,, light) of butane: the one...
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