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2. Consider the reaction below and answer the questions that follow. You can ignore stereochemistry in this problem...
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)...
Draw curved arrows to show electron reorganization for the reaction step below. Arrow-pushing Instructions Visited GN=C:...
Draw curved arrows to show electron reorganization for the reaction step below. Arrow-pushing Instructions Visited GN=C: + Học : – GN=C–CH+ :: reg (References] Draw curved arrows to show electron reorganization for the reaction step below. Arrow-pushing Instructions Visited 210g 2re :o: H3c-c-c: :0-H :o: H3C-©-OH + :C: For the reaction below: H2C=CHCH2-H – OH H2C=CHCH2 + H-OH a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL Table Reference, not data from your text. Click...
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...
Using the table of bond dissociation enthalpies, calculate AH° for the reaction A. (Use the entries...
Using the table of bond dissociation enthalpies, calculate AH° for the reaction A. (Use the entries for propene and propenyl halides for the calculation of cyclohexene and cyclohexenyl halides, respectively. Pay attention to the algebraic sign of your answer!) C-H bond BDE (kJ/mol) CH3-H 439 C2H:-H 422 (CH3), CH-H 414 (CH3)3C-H 405 CH2=CHCH2-H 372 CH2=CH-H 464 Table of bond dissociation enthalpies C-X bond BDE (kJ/mol) X, and HX bonds BDE (kJ/mol) CH3-I 242 CI-CI 247 C2H5-I 238 Br-Br 192 (CH3)2...
6. Complete the two propagation steps for the reaction shown below by filling in curved arrows(that...
6. Complete the two propagation steps for the reaction shown below by filling in curved arrows(that show the making/breaking of bonds) and the structures of A-C. Draw in hydrogens if necessary: 8 points. NBS - Br (2) 0.0 - do Br + Bri Total Points
17,18 please, thank you! 17. Ignoring stereochemistry, what is the overall enthalpy difference of the reaction of 3-...
17,18 please, thank you!
17. Ignoring stereochemistry, what is the overall enthalpy difference of the reaction of 3-ethylpentane, fluorine, and light going to the major mono-fluorinated product? Bond Disassociation Energies kcal/mole Selectivity Ratios C-H C-F C-CI C-Br C- X-X H-X 1° 2 3° 1° 98 107 81 68 53 38 136 1 1.2 1.4 20 95 106 80 68 53 CI 58 103 Cl 1 30 91 106 79 65 50 Br 46 88 Br 80 1700 36 71 T...
1. Follow the instructions given: 14 points. a. Provide the IUPAC name for the molecule shown...
1. Follow the instructions given: 14 points. a. Provide the IUPAC name for the molecule shown below. (4 points) b. Provide the IUPAC name for the molecule shown below. (4 points) c. Rank the following cations in terms of theird stability (least to most stable). (3 points) . Which C-H bond below is weaker in terms of bond strength). A or B? (3 points) N. least stable most stable Bond is weaker. 2. Consider the reaction below and answer the...
1. Follow the instructions given: 14 points. a. Provide the IUPAC name for the molecule shown...
1. Follow the instructions given: 14 points. a. Provide the IUPAC name for the molecule shown below. (4 points) b. Provide the IUPAC name for the molecule shown below. (4 points) c. Rank the following cations in terms of their stability (least to most stable). (3 points) d. Which C-H bond below is weaker (in terms of bond strength), A or B? (3 points) ON least stable < < most stable Bond B is weaker. 2. Consider the reaction below...
2). Consider the following intramolecular S2 reaction. no ♡ + HI A) (5 pts) Use the...
2). Consider the following intramolecular S2 reaction. no ♡ + HI A) (5 pts) Use the table of Bond Dissociation Enthalpies (at the back of the exam) to calculate the approximate ΔΗπη. B) (3 pts) Is the reaction endothermic or exothermic? Why? C) (6 pts) Draw the Reaction Energy Coordinate Diagram. Label the axes, reactant(s), product(s), transition state(s), intermediate(s), activation energy, and reaction enthalpy. D) (3 pts) In regards to entropy, would you expect the reaction to be favorable, or...
3(a) 14 points The structures below show the step-wise bond making and bond breaking in this...
3(a) 14 points The structures below show the step-wise bond making and bond breaking in this reaction. i. Draw curved arrows to show the electron flow that has occurred in each step. H :0u 4 H-CHa +H- H H H н' 16% i. Calculate Keq for the reaction at stp. il. Calculate AG for the reaction at stp. (b) 12 points] Using the bond dissociations values in the table below, calculate the AH for the reaction that convert haloalkane in...
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)...
Draw curved arrows to show electron reorganization for the reaction step below. Arrow-pushing Instructions Visited GN=C: + Học : – GN=C–CH+ :: reg (References] Draw curved arrows to show electron reorganization for the reaction step below. Arrow-pushing Instructions Visited 210g 2re :o: H3c-c-c: :0-H :o: H3C-©-OH + :C: For the reaction below: H2C=CHCH2-H – OH H2C=CHCH2 + H-OH a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL Table Reference, not data from your text. Click...
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...
Using the table of bond dissociation enthalpies, calculate AH° for the reaction A. (Use the entries for propene and propenyl halides for the calculation of cyclohexene and cyclohexenyl halides, respectively. Pay attention to the algebraic sign of your answer!) C-H bond BDE (kJ/mol) CH3-H 439 C2H:-H 422 (CH3), CH-H 414 (CH3)3C-H 405 CH2=CHCH2-H 372 CH2=CH-H 464 Table of bond dissociation enthalpies C-X bond BDE (kJ/mol) X, and HX bonds BDE (kJ/mol) CH3-I 242 CI-CI 247 C2H5-I 238 Br-Br 192 (CH3)2...
6. Complete the two propagation steps for the reaction shown below by filling in curved arrows(that show the making/breaking of bonds) and the structures of A-C. Draw in hydrogens if necessary: 8 points. NBS - Br (2) 0.0 - do Br + Bri Total Points
17,18 please, thank you!
17. Ignoring stereochemistry, what is the overall enthalpy difference of the reaction of 3-ethylpentane, fluorine, and light going to the major mono-fluorinated product? Bond Disassociation Energies kcal/mole Selectivity Ratios C-H C-F C-CI C-Br C- X-X H-X 1° 2 3° 1° 98 107 81 68 53 38 136 1 1.2 1.4 20 95 106 80 68 53 CI 58 103 Cl 1 30 91 106 79 65 50 Br 46 88 Br 80 1700 36 71 T...
1. Follow the instructions given: 14 points. a. Provide the IUPAC name for the molecule shown below. (4 points) b. Provide the IUPAC name for the molecule shown below. (4 points) c. Rank the following cations in terms of theird stability (least to most stable). (3 points) . Which C-H bond below is weaker in terms of bond strength). A or B? (3 points) N. least stable most stable Bond is weaker. 2. Consider the reaction below and answer the...
1. Follow the instructions given: 14 points. a. Provide the IUPAC name for the molecule shown below. (4 points) b. Provide the IUPAC name for the molecule shown below. (4 points) c. Rank the following cations in terms of their stability (least to most stable). (3 points) d. Which C-H bond below is weaker (in terms of bond strength), A or B? (3 points) ON least stable < < most stable Bond B is weaker. 2. Consider the reaction below...
2). Consider the following intramolecular S2 reaction. no ♡ + HI A) (5 pts) Use the table of Bond Dissociation Enthalpies (at the back of the exam) to calculate the approximate ΔΗπη. B) (3 pts) Is the reaction endothermic or exothermic? Why? C) (6 pts) Draw the Reaction Energy Coordinate Diagram. Label the axes, reactant(s), product(s), transition state(s), intermediate(s), activation energy, and reaction enthalpy. D) (3 pts) In regards to entropy, would you expect the reaction to be favorable, or...
3(a) 14 points The structures below show the step-wise bond making and bond breaking in this reaction. i. Draw curved arrows to show the electron flow that has occurred in each step. H :0u 4 H-CHa +H- H H H н' 16% i. Calculate Keq for the reaction at stp. il. Calculate AG for the reaction at stp. (b) 12 points] Using the bond dissociations values in the table below, calculate the AH for the reaction that convert haloalkane in...
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