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Question 14 Question 14 Answer: Consider the three-step mechanism for the reaction of A through intermediates B a ro...
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?
BO D Which of ten The reaction of A to B. B) The reaction of B...
BO D Which of ten The reaction of A to B. B) The reaction of B to C. C) The reaction of C to D. D) All three steps occur at the same rate: there is no rate-limiting step. E) The most exothermic step is rate-limiting. esaretim Rank the following carbocations in order of stability. (The most stable is first.) > III II B) II > > III C) III > > II I > Il > III D 36)...
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...
Question 1.b of 12 A reaction mechanism has the following proposed elementary steps: Step 1: A...
Question 1.b of 12 A reaction mechanism has the following proposed elementary steps: Step 1: A B +C Step 2: A+B →D Step 3: 2 A+D → C+E The overall reaction is 4 A 2 C + E. Which species are intermediates in this reaction? A) B and C B) B C) B and D D) D E) C and D
Ho for the pre c! . Given the bond dissociation energies below in Kcal/mol, estimate the ano forth (CH),CH-CI step...
Ho for the pre c! . Given the bond dissociation energies below in Kcal/mol, estimate the ano forth (CH),CH-CI step . CHCI c) 40 kcal/mol (CH.J.CH a) +22 kcal/mol b)-22 kcal/mol e) -45 kcal/mol he major monobrominated product that results from when methylcyclopentane is subjected d) +45 kcal/mol c) a tertiary halide radical bromination is b) a secondary halide e) bromomethane a) A primary halide d) A quaternary halide 3. Which of the following is a termination a) Cl +...
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...
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?...
last question says draw out step by step mechanism for the formation of one of your products from Q 2 ... thats actuall...
last question says draw out step by step mechanism for the
formation of one of your products from Q 2 ... thats actually
question 1 here. thank u!!!
What major product or products would you expect from the mono-acylation of toluene assuming you used he same conditions you used for the reaction with ferrocene? What products would you find with bromobenzene? What would happen if you used a non-symmetrical anhydride, for example methyl ethyl anhydride (shown below), in the mono...
Question 1a. (0.5 point) Consider the bond dissociation energies listed below in kcal/mol CH3 – Br...
Question 1a. (0.5 point) Consider the bond dissociation energies listed below in kcal/mol CH3 – Br 70 CH3CH2 – Br 68 (CH3)2CH – Br 68 (CH3)3C – Br 65 These data show that the carbon–bromine bond is weakest when bromine is bound to a ____. a) methyl carbon b) primary carbon c) secondary carbon d) tertiary carbon e) quaternary carbon 1b. Predict the product for the halogenation reaction given below when methyl cyclohexane is subjected to free radical bromination Br2...
Please answer questions 14, and 15!! The rate constant for a particular reaction is 0.47 M^-1...
Please answer questions 14, and 15!!
The rate constant for a particular reaction is 0.47 M^-1 s^-1. If the initial concentration of reactant is 0.25 mol/L, it takes _____ s for the concentration to decrease to 0.20 mol/L. A) 2.1 B) 1.4 C) 1.0 D) 0.47 E) 0.20 Use the mechanism below to answer the next question NO + Br_2 doubleheadarrow NOBr_2 (fast) NOBr_2 + NO rightarrow 2NOBr (slow) Which of the following reaction mechanisms is consistent with the proposed...
BO D Which of ten The reaction of A to B. B) The reaction of B to C. C) The reaction of C to D. D) All three steps occur at the same rate: there is no rate-limiting step. E) The most exothermic step is rate-limiting. esaretim Rank the following carbocations in order of stability. (The most stable is first.) > III II B) II > > III C) III > > II I > Il > III D 36)...
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...
Question 1.b of 12 A reaction mechanism has the following proposed elementary steps: Step 1: A B +C Step 2: A+B →D Step 3: 2 A+D → C+E The overall reaction is 4 A 2 C + E. Which species are intermediates in this reaction? A) B and C B) B C) B and D D) D E) C and D
Ho for the pre c! . Given the bond dissociation energies below in Kcal/mol, estimate the ano forth (CH),CH-CI step . CHCI c) 40 kcal/mol (CH.J.CH a) +22 kcal/mol b)-22 kcal/mol e) -45 kcal/mol he major monobrominated product that results from when methylcyclopentane is subjected d) +45 kcal/mol c) a tertiary halide radical bromination is b) a secondary halide e) bromomethane a) A primary halide d) A quaternary halide 3. Which of the following is a termination a) Cl +...
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...
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?...
last question says draw out step by step mechanism for the
formation of one of your products from Q 2 ... thats actually
question 1 here. thank u!!!
What major product or products would you expect from the mono-acylation of toluene assuming you used he same conditions you used for the reaction with ferrocene? What products would you find with bromobenzene? What would happen if you used a non-symmetrical anhydride, for example methyl ethyl anhydride (shown below), in the mono...
Please answer questions 14, and 15!!
The rate constant for a particular reaction is 0.47 M^-1 s^-1. If the initial concentration of reactant is 0.25 mol/L, it takes _____ s for the concentration to decrease to 0.20 mol/L. A) 2.1 B) 1.4 C) 1.0 D) 0.47 E) 0.20 Use the mechanism below to answer the next question NO + Br_2 doubleheadarrow NOBr_2 (fast) NOBr_2 + NO rightarrow 2NOBr (slow) Which of the following reaction mechanisms is consistent with the proposed...
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