9. Which of the following is the rate-determining step in the free-radical bromination of methane? I II III IV V A) I B) II C) III D) IV E) V Br2 CH₁ + Br CH3 + Br₂ CH₁ + Br CH3 CH3 2 Br CH3Br CH3Br CH3 + H• + Br + HBr CH3CH3
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- Match the reaction with the mechanism that it proceeds through. HO, HO. X catalytic H₂SO4 HBr Br₂ light 1. Free Radical Chain Reaction 2. SN1 3. SN2 4. E1 5. E2Which of the following is the rate-determining step in the free-radical bromination of methane? I || ||| IV Br₂ CH4 + Br CH3 + • CH3 + CH3 A) I B || C ||| Br₂ D) IV 2 Br. • CH3 + HBr CH3Br + CH3CH3 Br.Which step in the mechanism for free-radical bromination of propane is rate-determining? O Br-Br 2 Br O (CH3)2C-H+ Br→ (CH3)2C + HBr O (CH3)2C + Br-Br (CH3)2CBr + Br. O (CH3)2C + Br. → (CH3)2CBr
- In an SN2 mechanism, how does it work, what are all of the steps, transition state and all final products?what is the rate at which Br- (aq) disppears in reaction below if the rate of disappearence of BrO3- (aq) is 0.022 M/sThe following mechanism has been proposed for the reaction of NO w/H2 to form N2O and H2O NO(g) + NO(g) --(k1)--> N2O2 (g) N2O(g)+ H2(g) --(k2)-->N2O(g)+H2O(g) a. Show that the elementary steps of the proposed mechanism add to provide a balanced equation for the reaction b. Write a rate law for each elementary step in the mechanism c. Identify any intermediates in the mechanism
- 23. Which rate law is consistent with the reaction mechanism shown? CH3CH₂ Br: :ÖCH3 A) B) D) CH3CH₂ ÖCH3 + :Br: Rate = k [CH3CH2Br][Br-] Rate = k [CH3CH2Br][CH3O-] Rate = k [CH30-] Rate = k [CH3CH2Br]Give the reaction mechanism for the following subparts in clear handwritten!The below reaction follows second order rate kinetics and proceeds via a bimolecular mechanism. KCNCH3B1 -» KBr + CH3CN If the concentration of potassium bromide were doubled, how many times faster would the reaction go? If the concentration of CH3Br were doubled. How much faster would the reaction go? Write the rate law for the above reaction. If [KCN] 0.5 M, [CH3Br] 0.5 M, and the relative reaction rate is 0.25 M/s, what is the rate constant? Also, what are the units of the rate constant?
- Sketch the reaction mechanism (including the final product) corresponding to the following description of; 2-bromo-4-methylpentane is being reacted with sodium cyanide in diethyl ether (set up the reaction – next you will get a description of the mechanism to draw). A lone pair of electrons from the cyanide attacks the carbon bonded to bromine, forming a new carbon-carbon bond. At the same time, the carbon-bromine bond breaks with the electron pair from the carbon-bromine bond moving toward the bromine to form a bromide ion. This will form the product 2,4-dimethylpentanenitrile and sodium bromide.a) Identify the reaction and trace the complete mechanism hvExamples of SN1 and SN2 reaction mechanism.