How many steps is the reaction depicted by the reaction energy diagram below? Which area (A-G) represents the transition state of the rate limiting step? Is this reaction endergonic or exergonic? D В Number of steps: G G Transition state: E Circle one: endergonic exergonic A Reaction coordinate
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- Draw an energy diagram for each reaction. Label the axes, the startingmaterial, product, transition state, ΔHo, and Ea.a.) a concerted reaction with ΔHo = −80 kJ/mol and Ea = 16 kJ/molb.) a two-step reaction, A → B → C, in which the relative energy of thecompounds is A < C < B, and the step A → B is rate-determining(b) Consider the reaction of 1-bromobutane with a large excess of ammonia (NH3). Draw the reactants, the transition state, andthe products. Note that the initial product is the salt of an amine (RNH3+ Br - ), which is deprotonated by the excess ammonia to give the amine.1. What is final product? 2. What are the 4 reactions & steps in mechanism (show product and mechanism steps)? 3. It is kinetic or thermodynamic?
- For 10.29, the trans product (major product) and the cis product (third product) are displayed as possible E2 products. However, for 10.30, only the trans product (major product) is shown. How come the cis product is not needed?Draw an energy diagram for each reaction. Label the axes, the starting material, product, transition state, ?H°, and Ea.a. a concerted reaction with ?H° = –80 kJ/mol and Ea = 16 kJ/molb. a two-step reaction, A -> B ->C, in which the relative energy of the compounds is A < C < B, and the step A -> B is rate-determining.Wittig Reaction, Organci Chemistry shiw all steps.
- Which reaction is faster, one with Eact = +41.8 kJ/mol or one with Eact = +20.9 kJ>mol? Explain.Rank thr stability of the following sets of reaction intermediates.Which is most likely to have the slowest reaction rate? A) A reaction with Ea = 220 kJ/mol at a moderate temperature. B) A catalyzed reaction. C) A reaction with Ea = 550 kJ/mol at a low temperature. D) A reaction with Ea = 220 kJ/mol at a high temperature.
- 1. Of the two unimolecular reactions shown, decide which you think would be faster, i.e., which would have a higher relative rate constant (krel)? 2. Based on your answer, draw two lines on one reaction coordinate diagram that show the relative progress of each reaction along its path to product indicated? 3. what is Bond dissociation energy of the C-LG bond? 4. what is the Nature of the leaving group (LG)? 5. what is the relative size of activation energy (Ea) for each reaction? 6. what is the Hammond's postulate? 7. what are the Relative thermodynamic stability of the reactive intermediates? 8. what is Influence of the solvent (if given) on the reactions and intermediates?Consider the reaction coordinate diagram for the reaction below. How many steps is this reaction? How many intermediates are in the reaction? How many transition states are in the reaction? What is the rate limiting step?Consider the following two-step reaction: a.How many bonds are broken and formed in Step [1]? Would you predict the ΔHo of Step [1] to be positive or negative? b.How many bonds are broken and formed in Step [2]? Would you predict the ΔHo of Step [2] to be positive or negative? c.Which step is rate-determining? d.Draw the structure for the transition state in both steps of the mechanism. e.If ΔHooverall is negative for this two-step reaction, draw an energy diagram illustrating all of the information in parts (a)–(d).