Complete the following sentence. A mechanism is A. composed of a series of elementary steps. B....
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Complete the following sentence.
A mechanism is
A. composed of a series of elementary steps.
B. must have more than one step.
C. must involving many steps and be very complicated.
D. does not provide any valuable information.
Homework Answers
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Complete the following sentence.
A mechanism is
A.
composed of a series of elementary steps.
B....
Complete the following sentence. An elementary step is A. a uni-, bi-, or termolecular reaction. B....
Complete the following sentence. An elementary step is A. a uni-, bi-, or termolecular reaction. B. the same as the overall balanced reaction. C. can involve more than four reactants. D. is always a fast step.
What two criteria must a plausible mechanism meet? Select both criteria in the options. elementary steps...
What two criteria must a plausible mechanism meet? Select both criteria in the options. elementary steps must sum to the net reaction the mechanism must include at least two intermediates the slow step must always be the first step in the mechanism the rate law of the net reaction must match the rate law of the slowest step the mechanism must involve at least one catalyst Areaction profile is shown. Which step is the rate limiting (or rate determining) step...
The following mechanism, proposed for the decomposition of hydrogen peroxide is composed of 2 elementary steps:...
The following mechanism, proposed for the decomposition of hydrogen peroxide is composed of 2 elementary steps: H2O2(aq) + I'(aq) > H2O(l) + 10 (aq) 10 (aq) + H2O2(aq) -> H2O(l) + O2(g) + I'(aq) The rate law predicted by the mechanism is slow fast a) rate = k [H2O2) b) rate =k [H202][I] c) rate =k [H2O2][10] d) rate = k [H202) [1]
Which statement is false concerning elementary steps in a reaction mechanism? the rate law can be...
Which statement is false concerning elementary steps in a reaction mechanism? the rate law can be deduced from the stoichiometry of reactants for an elementary step the overall molecularity for an elementary step is the sum of the stoichiometric coefficients for all reactants in that step the rate law for an elementary step must be determined experimentally the rate law for the overall reaction is always the same as the rate law for the slowest elementary step both (c) and...
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
To understand how elementary steps make up a mechanism and how the rate law for an...
To understand how elementary steps make up a mechanism and how the rate law for an elementary step can be determined. Very often, a reaction does not tell us the whole story. For instance, the reaction NO2(g)+CO(g)→NO(g)+CO2(g)NO2(g)+CO(g)→NO(g)+CO2(g) does not involve a collision between an NO2NO2 molecule and a COCO molecule. Based on experimental data at moderate temperatures, this reaction is thought to occur in the following two steps: NO2(g)+NO2(g)→NO3(g)+NO(g)NO2(g)+NO2(g)→NO3(g)+NO(g) NO3(g)+CO(g)→CO2(g)+NO2(g)NO3(g)+CO(g)→CO2(g)+NO2(g) Each individual step is called an elementary step. Together, these...
8) A reaction occurs via the following sequence of elementary steps. What is the rate law...
8) A reaction occurs via the following sequence of elementary steps. What is the rate law based on this reaction mechanism? very fast slow fast 1st step: A B 2nd step: B+C D 3rd step: D - 2E A) rate = k[E]2 B) rate = k[A] [C] C) rate = k[B][C] D) rate = k[D] E) rate = k[A] [B]
5. Draw a complete mechanism for the following reactions. Show all elementary steps and intermediates (if...
5. Draw a complete mechanism for the following reactions. Show all elementary steps and intermediates (if S2. sketch what the transition state looks like), show all lone pairs, formal charges, appropriate arrows and stereochemistry. Reaction of cyclohexanol with HCl to make chlorocyclohexane in solvent ethanol. b) Reaction of ethanol with HBr to make bromoethane.
Substance A and B react in elementary steps according to the following equations: Step 1: A+B...
Substance A and B react in elementary steps according to the following equations: Step 1: A+B --> C+D k=0.25M/min Step 2: D+A --> C+E k=0.0002M/min a) Determine the equation for the overall reaction. b) Give the expected rate law for the reaction from the information above.
Which sequence of elementary steps describes a reasonable. mechanism for the following overall reaction? What major...
Which sequence of elementary steps describes a reasonable. mechanism for the following overall reaction? What major E2 product would form on reaction of (25,3R) 2- bromo-3-methylpentane with base? он снон осн, HO (b) (c) (a) A. (2)3-methylpent-2-ene B. (E) 3-methylpent-2-ene C (BR) 3-methylpent-1-ene D. ()3-methylpenta-1,3-diene L Heterolysis 2. Coordination 3. Proton transfer I. Proton transfer 2. S2 3. Proton transfer 1.S,2 2. Proton transfer 3. Proton transfer Consider the 5,2 step in the first line below, which takes place in...
What two criteria must a plausible mechanism meet? Select both criteria in the options. elementary steps must sum to the net reaction the mechanism must include at least two intermediates the slow step must always be the first step in the mechanism the rate law of the net reaction must match the rate law of the slowest step the mechanism must involve at least one catalyst Areaction profile is shown. Which step is the rate limiting (or rate determining) step...
The following mechanism, proposed for the decomposition of hydrogen peroxide is composed of 2 elementary steps: H2O2(aq) + I'(aq) > H2O(l) + 10 (aq) 10 (aq) + H2O2(aq) -> H2O(l) + O2(g) + I'(aq) The rate law predicted by the mechanism is slow fast a) rate = k [H2O2) b) rate =k [H202][I] c) rate =k [H2O2][10] d) rate = k [H202) [1]
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
8) A reaction occurs via the following sequence of elementary steps. What is the rate law based on this reaction mechanism? very fast slow fast 1st step: A B 2nd step: B+C D 3rd step: D - 2E A) rate = k[E]2 B) rate = k[A] [C] C) rate = k[B][C] D) rate = k[D] E) rate = k[A] [B]
5. Draw a complete mechanism for the following reactions. Show all elementary steps and intermediates (if S2. sketch what the transition state looks like), show all lone pairs, formal charges, appropriate arrows and stereochemistry. Reaction of cyclohexanol with HCl to make chlorocyclohexane in solvent ethanol. b) Reaction of ethanol with HBr to make bromoethane.
Which sequence of elementary steps describes a reasonable. mechanism for the following overall reaction? What major E2 product would form on reaction of (25,3R) 2- bromo-3-methylpentane with base? он снон осн, HO (b) (c) (a) A. (2)3-methylpent-2-ene B. (E) 3-methylpent-2-ene C (BR) 3-methylpent-1-ene D. ()3-methylpenta-1,3-diene L Heterolysis 2. Coordination 3. Proton transfer I. Proton transfer 2. S2 3. Proton transfer 1.S,2 2. Proton transfer 3. Proton transfer Consider the 5,2 step in the first line below, which takes place in...
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