According to Hammond Postulate, for an exergonic reaction step, select one
Consider the following reaction:, the reaction shown is an example of, select one or more
Homework Answers
01. Option (c) is correct option
Hammond postulate states that the transition state is similar to that reactant or product depends on the fact that to which transition state is close in energy level.
02. Option (b) is correct
As, both the isomers are produced in equal amount. Hence it is racemic in nature.
Regeoselective means only on stereoisomer will be produced.
Stereoselective means any of the stereoisomer is predominant over other.
Stereospecific means different reactant gives different stereoisomers.
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According to Hammond Postulate, for an exergonic reaction step,
select one
Consider the following reaction:, the...
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,...
2. (15 pts) Consider the energy diagram shown below for the reaction A + B ->...
2. (15 pts) Consider the energy diagram shown below for the reaction A + B -> C + D: a. What is the value of H for the reaction C + D -> A + B? (Give the number and sign.)_ b. What is the value of Ea for the reaction A + B -> C +D? (Give the number and sign.)_ c. Is the reaction C + D -> A + B endothermic or exothermic?_ d. What is the...
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...
a) Consider sider this two-step reaction. Draw the structure for the transition state in each step...
a) Consider sider this two-step reaction. Draw the structure for the transition state in each step of the mechanism. arly show any partially broken or partially formed bonds. Include only the hydrogens shown. (0.6 pts) Step 1 Step 2 (b) How many partially formed or partially broken bonds are found in the transition state structure for step 1? # of partially formed bonds (step 1) = ; # of partially broken bonds (step 1) = Will AH® for this reaction...
Select the major product of the following reaction. H2O ОН (racemic) ОН Consider the mechanism for...
Select the major product of the following reaction. H2O ОН (racemic) ОН Consider the mechanism for the following acid catalyzed hydration. Select all of the species that are intermediates in the mechanism for this reaction. НО* None, the reaction is concerted and doesn't have any intermediates t NaOH NaOH The following reaction has (Select] different possible E2 product(s). Which of the following options describes what product will be the major product? Select]
For the following reaction, select the transition state of the rate-determining step. CH,CH?! + NaSH CH,CH...
For the following reaction, select the transition state of the rate-determining step. CH,CH?! + NaSH CH,CH SH + Nal CH A) HS H3C B) 8+ 8. SH HC 8+ C) 8 8+ D) Na- 8 SH HH H H B c
Step 2 in the following reaction is an example of: Select one: a cycloaddition reaction a...
Step 2 in the following reaction is an example of: Select one: a cycloaddition reaction a sigmatropic rearrangement an electrocyclic reaction a reverse cycloaddition reaction
Consider the following reaction, and choose from the choices below which best represents the first step...
Consider the following reaction, and choose from the choices below which best represents the first step of the mechanism. НО ОН of н*(cat.) Select one: о а. с нари GILA OH O b. н* Х н* O d. " O e. ОН
Lucy propere (d) isopentane and 2-methylbutane 3. Which one of the following hexanes has the lowest...
Lucy propere (d) isopentane and 2-methylbutane 3. Which one of the following hexanes has the lowest boiling point? (a) 3-methylpentane (b) 2-methylpentane (c) hexane (d) 2,2-dimethylbutane 4. A CH3 In the lowest energy conformation of the compound to the right, how many alkyl substituents are axial? (a) 0 (c) 2 (b) 1 (d) 3 (CH),CHWV CH.CH 5. Identify the correct IUPAC name for the structure shown below. (a) 1-tert-butyl-2-chloro-5-bromocyclooctane (b) 5-bromo-1-tert-butyl-2-chlorocyclooctane (c) 1-bromo-4-chloro-5-tert-butylcyclooctane (d) 1-bromo-4-tert-butyl-5-chlorocyclooctane (e) 1-tert-butyl-4-bromo-7-chlorocyclooctane 6. Which of...
Consider the SN2 reaction of butyl bromide with hydroxide ion , Assuming no other changes, what...
Consider the SN2 reaction of butyl bromide with hydroxide ion , Assuming no other changes, what effect on the reaction rate would result from simultaneously doubling the concentrations of both butyl bromide and hydroxyl ion No effect (B)It would double the rate (C)it would increase the rate six times (D) It would increase the rate four times. 2. Which alky halide would you expect to undergo SN1 hydrolysis most rapidly? (A) (CH3)3C-I (B) (CH3)3C-Br (C) (CH3)3C-Cl (D) (CH3)3C-F 3....
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,...
2. (15 pts) Consider the energy diagram shown below for the reaction A + B -> C + D: a. What is the value of H for the reaction C + D -> A + B? (Give the number and sign.)_ b. What is the value of Ea for the reaction A + B -> C +D? (Give the number and sign.)_ c. Is the reaction C + D -> A + B endothermic or exothermic?_ d. What is the...
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...
a) Consider sider this two-step reaction. Draw the structure for the transition state in each step of the mechanism. arly show any partially broken or partially formed bonds. Include only the hydrogens shown. (0.6 pts) Step 1 Step 2 (b) How many partially formed or partially broken bonds are found in the transition state structure for step 1? # of partially formed bonds (step 1) = ; # of partially broken bonds (step 1) = Will AH® for this reaction...
Select the major product of the following reaction. H2O ОН (racemic) ОН Consider the mechanism for the following acid catalyzed hydration. Select all of the species that are intermediates in the mechanism for this reaction. НО* None, the reaction is concerted and doesn't have any intermediates t NaOH NaOH The following reaction has (Select] different possible E2 product(s). Which of the following options describes what product will be the major product? Select]
For the following reaction, select the transition state of the rate-determining step. CH,CH?! + NaSH CH,CH SH + Nal CH A) HS H3C B) 8+ 8. SH HC 8+ C) 8 8+ D) Na- 8 SH HH H H B c
Step 2 in the following reaction is an example of: Select one: a cycloaddition reaction a sigmatropic rearrangement an electrocyclic reaction a reverse cycloaddition reaction
Consider the following reaction, and choose from the choices below which best represents the first step of the mechanism. НО ОН of н*(cat.) Select one: о а. с нари GILA OH O b. н* Х н* O d. " O e. ОН
Lucy propere (d) isopentane and 2-methylbutane 3. Which one of the following hexanes has the lowest boiling point? (a) 3-methylpentane (b) 2-methylpentane (c) hexane (d) 2,2-dimethylbutane 4. A CH3 In the lowest energy conformation of the compound to the right, how many alkyl substituents are axial? (a) 0 (c) 2 (b) 1 (d) 3 (CH),CHWV CH.CH 5. Identify the correct IUPAC name for the structure shown below. (a) 1-tert-butyl-2-chloro-5-bromocyclooctane (b) 5-bromo-1-tert-butyl-2-chlorocyclooctane (c) 1-bromo-4-chloro-5-tert-butylcyclooctane (d) 1-bromo-4-tert-butyl-5-chlorocyclooctane (e) 1-tert-butyl-4-bromo-7-chlorocyclooctane 6. Which of...
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