Homework Answers
In SN1 and E1 the RDS step is the formation of carbocation in which only the concentration of alkyl halide matterns not the nucleophile or base hence it follows first order kinetics
But in SN2 and E2 it happens in a single step no intermediates is formed
hence the attack of nucleophile (SN2) or base (E2) on the alkyl halide (substrate) both takes place in the single step therefore the concentration of both appears in the rate law hence it follows second order kinetics
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C. Indicate which is the late-detemning step. d. Is it the same mechanism as in question...
Please answer all. thanks QUESTION 5 HO Reaction C Reaction D Consider the structural changes that...
Please answer all. thanks
QUESTION 5 HO Reaction C Reaction D Consider the structural changes that take place during Reaction C and Reaction D and the fundamental mechanisms that you identified from the previous question. Fill in the boxes with the missing reagent that is required to complete Reaction C and Reaction D? (Choose only one reagent per reaction.) O Reaction C: HCI Reaction C: Cl2, heat Reaction C: SOCl2 with pyridine Reaction D: KOC(CH3)3 O Reaction D: NaOCH2CH3 Reaction...
Questions 2-10 please!! 1) A substitution reaction is: [2] a) A reaction during which an OH...
Questions 2-10 please!!
1) A substitution reaction is: [2] a) A reaction during which an OH group of a molecule is replaced by a halogen. b) A reaction during which water is the leaving group. c) A reaction during which a functional group of a molecule is replaced by an electrophile. d) A reaction during which a functional group of a molecule is replaced by another functional group. V 12 2) Substitution reactions are classified either as electrophilic or nucleophilic...
2. (a) (i) Draw an arrow-pushing mechanism that illustrates the electron flow in the acid-base reaction...
2. (a) (i) Draw an arrow-pushing mechanism that illustrates the electron flow in the acid-base reaction below. Use the structures shown below in your arrow-pushing mechanism. (4pts for correct mechanism). (ii) Using pKa values indicated in Table 1.8 (round to nearest whole number) and estimate the equilibrium constant for this reaction (Keq). Show work which led to this value. (3pts for work, 1pt for correct Keq indicated). (iii) Draw a base (assuming the same acid provided below) that would reverse...
14. Which mechanism is responsible for glucuronidation? a. Ei b. SN c. E2 d. SN2 e....
14. Which mechanism is responsible for glucuronidation? a. Ei b. SN c. E2 d. SN2 e. None of the above 15. Mathematically what is the Kow? 16. What does the Kow tell about a compound? 17. What cofactor is required for methyltransferase? a. Glucuronic acid b. S-Adenosyl methionine c. Acetic acid d. Sulfate e. Acetyl COA 18. When is radiation possibly good for us (one of two possible)? 19. Why would gel electrophoresis cell analysis be important in toxin research?...
1. In both the sodium iodide test and the silver nitrate test, why does 2-bromobutane react faster...
1. In both the sodium iodide
test and the silver nitrate test, why does 2-bromobutane react
faster than 2-chlorobutane?
Bromine is a better leaving group since it is a weaker base than
chlorine is.
2. a. Why does benzyl chloride react under both
SN1 and SN2 conditions?
Benzyl
chloride is a primary alkyl halide, hence reactive under SN2
conditions.
The
primary carbocation formed due to the departure of Cl- is
stabilized by the pi electrons in the benzene ring.
b. Why is...
one of the Kekulé structures is not consistent with valence rules? 3. How many degrees of...
one of the Kekulé structures is not consistent with valence rules? 3. How many degrees of unsaturation (double bond equivalents) ore fouand in 3 O-H 4. The regiochemistry of Markovnikov with no rearrangements of alkenes is c. subject to solvent effects 5. The kinetics of this reaction is. a. first-order b. c, cannot be determined 6. Hydroboration/oxidation of alkenes occurs with a. syn b. trans c. anti d. random 7. The reaction of an alkene with dichlorocarbene is: 8. The...
need help with the boxed bullet point. writing the chemical reaction scheme for the experiment. Synthesis of an A...
need help with the boxed bullet point. writing the chemical
reaction scheme for the experiment.
Synthesis of an Alkyl Halide: A Nucleophilic Substitution Reaction, Part I Pre-lab Assignment for Synthesis of an Alkyl Halide: A Nucleophilic Substitution Reaction, Part 1 1. From The Organic Chem Lab Survival Manual ( edition) by Zubrick • Review pages 201-204: Standard Reflux. • Review pages 127-140: Extraction • Review pages 164-189: Distillation, Simple Distillation. The Distillation Example, and The Distillation Mistake. 2. Read this...
Experiment 14 SN2: Synthesis of 1-Bromobutane Alkyl halides can be prepared from their corresponding alcohols via...
Experiment 14 SN2: Synthesis of 1-Bromobutane Alkyl halides can be prepared from their corresponding alcohols via an acid catalyzed substitution reaction. The mechanism of these acid catalyzed substitution reactions are labeled as SNI (substitution, nucleophilie, unimolecular) and S2 (substitution, nucleophilie, bimolecular). Tertiary alcohols follow the Syl route, primary alcohols follow the S2, route and secondary alcohols can follow either path. Sth CyHe 81 CH? Br-CH e-OH- -C-OH OH Figure / Conversion of 1-butanol into 1-bromobutane by an Sp2 mechanism The...
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....
9) What are we removing with the water wash? Why don’t we just add the sodium...
9) What are we removing with the water wash? Why don’t we just
add the sodium bicarbonate directly to the reaction mixture instead
of doing a water wash? 10) Provide the results of the silver
nitrate test.
Introduction Alkyl halides can be prepared from alcohols by reactions with hydrogen halides (HCl, HBr, or HI) via nucleophilic substitution. In this type of reaction, the nucleophile displaces a leaving group from a carbon atom of an organic substrate (here the alcohol once...
Please answer all. thanks
QUESTION 5 HO Reaction C Reaction D Consider the structural changes that take place during Reaction C and Reaction D and the fundamental mechanisms that you identified from the previous question. Fill in the boxes with the missing reagent that is required to complete Reaction C and Reaction D? (Choose only one reagent per reaction.) O Reaction C: HCI Reaction C: Cl2, heat Reaction C: SOCl2 with pyridine Reaction D: KOC(CH3)3 O Reaction D: NaOCH2CH3 Reaction...
Questions 2-10 please!!
1) A substitution reaction is: [2] a) A reaction during which an OH group of a molecule is replaced by a halogen. b) A reaction during which water is the leaving group. c) A reaction during which a functional group of a molecule is replaced by an electrophile. d) A reaction during which a functional group of a molecule is replaced by another functional group. V 12 2) Substitution reactions are classified either as electrophilic or nucleophilic...
2. (a) (i) Draw an arrow-pushing mechanism that illustrates the electron flow in the acid-base reaction below. Use the structures shown below in your arrow-pushing mechanism. (4pts for correct mechanism). (ii) Using pKa values indicated in Table 1.8 (round to nearest whole number) and estimate the equilibrium constant for this reaction (Keq). Show work which led to this value. (3pts for work, 1pt for correct Keq indicated). (iii) Draw a base (assuming the same acid provided below) that would reverse...
14. Which mechanism is responsible for glucuronidation? a. Ei b. SN c. E2 d. SN2 e. None of the above 15. Mathematically what is the Kow? 16. What does the Kow tell about a compound? 17. What cofactor is required for methyltransferase? a. Glucuronic acid b. S-Adenosyl methionine c. Acetic acid d. Sulfate e. Acetyl COA 18. When is radiation possibly good for us (one of two possible)? 19. Why would gel electrophoresis cell analysis be important in toxin research?...
1. In both the sodium iodide
test and the silver nitrate test, why does 2-bromobutane react
faster than 2-chlorobutane?
Bromine is a better leaving group since it is a weaker base than
chlorine is.
2. a. Why does benzyl chloride react under both
SN1 and SN2 conditions?
Benzyl
chloride is a primary alkyl halide, hence reactive under SN2
conditions.
The
primary carbocation formed due to the departure of Cl- is
stabilized by the pi electrons in the benzene ring.
b. Why is...
one of the Kekulé structures is not consistent with valence rules? 3. How many degrees of unsaturation (double bond equivalents) ore fouand in 3 O-H 4. The regiochemistry of Markovnikov with no rearrangements of alkenes is c. subject to solvent effects 5. The kinetics of this reaction is. a. first-order b. c, cannot be determined 6. Hydroboration/oxidation of alkenes occurs with a. syn b. trans c. anti d. random 7. The reaction of an alkene with dichlorocarbene is: 8. The...
need help with the boxed bullet point. writing the chemical
reaction scheme for the experiment.
Synthesis of an Alkyl Halide: A Nucleophilic Substitution Reaction, Part I Pre-lab Assignment for Synthesis of an Alkyl Halide: A Nucleophilic Substitution Reaction, Part 1 1. From The Organic Chem Lab Survival Manual ( edition) by Zubrick • Review pages 201-204: Standard Reflux. • Review pages 127-140: Extraction • Review pages 164-189: Distillation, Simple Distillation. The Distillation Example, and The Distillation Mistake. 2. Read this...
Experiment 14 SN2: Synthesis of 1-Bromobutane Alkyl halides can be prepared from their corresponding alcohols via an acid catalyzed substitution reaction. The mechanism of these acid catalyzed substitution reactions are labeled as SNI (substitution, nucleophilie, unimolecular) and S2 (substitution, nucleophilie, bimolecular). Tertiary alcohols follow the Syl route, primary alcohols follow the S2, route and secondary alcohols can follow either path. Sth CyHe 81 CH? Br-CH e-OH- -C-OH OH Figure / Conversion of 1-butanol into 1-bromobutane by an Sp2 mechanism The...
9) What are we removing with the water wash? Why don’t we just
add the sodium bicarbonate directly to the reaction mixture instead
of doing a water wash? 10) Provide the results of the silver
nitrate test.
Introduction Alkyl halides can be prepared from alcohols by reactions with hydrogen halides (HCl, HBr, or HI) via nucleophilic substitution. In this type of reaction, the nucleophile displaces a leaving group from a carbon atom of an organic substrate (here the alcohol once...
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