The ratio of reactivity of tertiary:secondary:primary hydrogen atoms in a bromination reaction at 400 K is 1600:82:1. Using this information, calculate the percentage of 1-bromo-2- methylpropane that would be expected in a monochlorination reaction of of 2-methylpropane. Ха Br Br2 hv % 1 2 3 ☑ Br 4 5 6 C 7 8 9 +/- 0 x10
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- Reasoning from Hammond’s postulate, predict the regioselectivity of radical fluorination relative to that of radical chlorination and bromination.Acid catalyzed hydrolysis of an ester ocurs by the following process: RC=OOR' + H20 + H* -> RC=OOH + R'OH + H+ If the rate of hydrolysis is -d[ester]/dt = k[ester][H*] and k=0.015 L mol-1 s1 at 25°C, what is the t1/2 for loss of ester when the initial concentrations are: [H*]o=0.10 mol L-1 [ester]o=0.25 mol L-1? (Ignore the reverse reaction.)From the table of available reagents select the one(s) you would use to convert:3-pentanol to 3-bromopentane:cyclopentanol to trans-2-methylcyclopentanol:Use the minimum number of steps; in no case are more than four steps necessary.List reagents by letter in the order that they are used; example: fa.
- Useful Information: sodium metam: Commercial grade sodium metam is 33% pure sodium metam by weight and has a density of 1.2 g/mL. Hydrolysis of metam (Methyl isothiocynate) + H2S Rate constants for hydrolysis for metam (base catalyzed hydrolysis is negligible) = 300 mol -1 L. sec -1 , = 1 x 10-8 sec-1 Metam also undergoes photolysis to methyl isothiocyanate with a half-life of 1.6 hrs. Data for Sacramento River discharge Q = 75,000 L/min mean depth = 0.30 m pH = 7.8 mean width = 3.2 m dispersion coefficient D = 1.6 x 102 m2/min Assuming the spill acts acts as a single point source. How long does it take for the maximum contaminant concentration to get to Lake Shasta? If Na+ acts as conservative (i.e., it is not transformed) tracer, calculate the maximum concentration (in g/L) at Lake Shasta. (Hint: remember that sodium only constitutes a…Shown below is a carbocation intermediate in an electrophilic addition reaction of HCl with an alkene. For the conformation shown, select each hydrogen whose bond to carbon is aligned for effective hyperconjugation with the vacant p orbital on the positively charged carbon. Each adjacent carbon will have only one C-H bond so aligned. • Gray = C; white = H; red = 0; blue = N; dark green = Cl; brown =Br; light green =F; purple = I; yellow = S; orange = P. • Double click to select atoms. • You can zoom in and out using the mouse scroll wheel (or pinch to zoom on touch screens).Describe the reaction mechanism for the hydrolysis of 2-bromo-2-methylpropane [CH3C(CH3)2Br] with aqueous hydroxide ions (OH-).The description should be detailed and must include the type of bond fission that takes place. You may sketch and insert suitable diagrams to aid your description if you wish
- A chemist wanted to determine experimentally the relative ease of removing a hydrogen atom from a tertiary, a secondary, and a primary carbon by a chlorine radical. He allowed 2-methylbutane to undergo chlorination at 300 °C and obtained as products 36% 1-chloro-2-methylbutane, 18% 2-chloro-2-methylbutane, 28% 2-chloro-3-methylbutane, and 18% 1-chloro-3-methylbutane. What values did he obtain for the relative ease of removing a hydrogen atom from tertiary, secondary, and primary hydrogen carbons by a chlorine radical under the conditions of his experiment?6. Some reactions of 2-iodopropane are shown below: reaction 1 CH;CHCH; reaction 3 (CH3),CHOCH3 CH;CH=CH, reaction 2 (CH3)½CHNH, i) For each of the reactions shown, name the reagent used and state the condition of reaction. ii) State the type of mechanism of hydrolysis reaction in 2-iodopropane. iii) Write the mechanism involve in the reactionBromine reacts with alkenes in methanol according to the equation: - When this reaction was carried out with 4-tert-butylcyclohexene, only one isomer was formed with the molecular formula C12H23BrO (80% yield). Which of the following is the structure more reasonable for this compound?. Explain your reasoning through acorresponding mechanism.
- The compound below is treated with chlorine in the presence of light. CH3 CH3 CH3 Draw the structure for the organic radical species produced by reaction of the compound with a chlorine atom. Assume reaction occurs at the weakest C-H bond. • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. Sn [F ?1. The following synthetic schemes all have at least one flaw in them. What is wrong with each? (a) Br CO2H CH3CH2CHCH2CH3 1. Mg CH3CH2CHCH,CH3 2. NaCN 3. H30* (b) .CH2CO2H „CH2CH3 1. LIAIH 2. H30* (c) он он CH3CCH2CH2CI 1. 1. NaCN 2. H30* CH3CCH2CH2COH CH3 CH3In unpolluted air at 300 K, the hydroxyl radical OH reacts with CO with a bimolecular rate constant of 1.6 × 101' L mol-1 s-1 and with CH4 with a rate constant of 3.8 × 10° L mol¬1 s-1. Take the partial pressure of CO in air to be constant at 1.0 × 10-7 atm and that of CH4 to be 1.7 x 10-6 atm, and assume that these are the primary mecha- nisms by which OH is consumed in the atmosphere. Cal- culate the half-life of OH under these conditions.