43. Identify the reagent that will produce the following brominated product in greatest amount. Br A. Br2/uv ? B. Br2/FeBr3 C. NBS D. B12/CC14 44. Under acidic condition, which of the following compounds can not be oxidized by KMnO4. A. toluene B. 2-butene C. methylcyclohexane D. 2-butyne 45. What alkene product can be produced from the reaction of 2-hexyne with Lindlar's catalyst? A. cis-2-Hexene B. trans-2-Hexene C. Hexane D. A and B

43. Identify the reagent that will produce the following brominated product in greatest amount. Br A. Br2/uv ? B. Br2/FeBr3 C. NBS D. B12/CC14 44. Under acidic condition, which of the following compounds can not be oxidized by KMnO4. A. toluene B. 2-butene C. methylcyclohexane D. 2-butyne 45. What alkene product can be produced from the reaction of 2-hexyne with Lindlar's catalyst? A. cis-2-Hexene B. trans-2-Hexene C. Hexane D. A and B

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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57. The order of decreasing ease of dehydrohalogenation OCH₂C I. >-CH2CH2CI A. I>II>III>IV B. CH3CH₂CHCICH3 C. II. CHOHCH₂CH3 D. CH3CHBRCH₂CH3 CH₂CH2C1 B. III>II>I>IV 58. Which of the following reactions will produce the highest percentage yield of 1-butene. OH A. CH3CH₂CH(N* (CH3)3)CH3 alc. KOH conc. H₂SO4 heat NaOC₂H5 III. C₂H5OH of the following compounds is: CH2CH₂CI CH₂CH₂C1 CH₂ -CH₂CH2CI C. III>IV>II> I IV. D. IV>III>II>I
10. In free-radical substitution reaction of alkanes with halogens under uv light, A. the photolytic breaking of the halogen is the rate determining step. B. the abstraction of hydrogen from alkane by the halogen radical is the rate determining step C. the formation of alkylradical is the rate determining step. D. the formation of halogen radical is the rate determining step. 11. Which of the following processes could be the termination step in free radical substitution reaction? A. C₂H6 ---→ 2CH3- B. C₂H6 +H --⇒ H₂ + C₂H5 C. CH3 + CH3 --→ C₂H6 D. C₂H5 --→ C₂H4 + H
10. In free-radical substitution reaction of alkanes with halogens under uv light, A. the photolytic breaking of the halogen is the rate determining step. B. the abstraction of hydrogen from alkane by the halogen radical is the rate determining step C. the formation of alkylradical is the rate determining step. D. the formation of halogen radical is the rate determining step. 11. Which of the following processes could be the termination step in free radical substitution reaction? A. C₂H6 ---→ 2CH3 B. C₂H6 +H. --→ H₂ + C₂H5 C. CH3 + CH3 --→ C₂H₂ D. C₂H5 --→ C₂H4 + H 12. Which of the following is the most stable carbonium ion intermediate? A. primary carbonium ion B. secondary carbonium ion C. tertiary carbonium ion D. allyl carbonium ion
Oxidation of Butanol -1 in KMnO4/H+ will produce-------------. a.Butanoic Acid b.Butanal c.Pentanoic acid d.Butene -2
2) The product of the reaction shown is which of the following? a. An alkane b. A cis alkene c. A trans alkene d. An alkyne e. The reaction fails H2 (1 atm) Pd(s), 25 °C
A terminal alkyne (RC=CH) is exposed to excess HBr. What rule should be followed to determine the placement of the halogen atoms in the product? A. Markovnikov rule O B. Hofmann's rule O C. Zaitzev's rule D. Anti-Markovnikov rule
When free radical halogenation is performed with one of the compounds below, only a single product with the formula C5H11Cl is isolated. Which compound fits this description? Select one: a. 2,2-dimethylpropane b. cyclopentane c. pentane d. 2-methylbutane
4. Fill in the missing information (reactants, products, or reagents) in the following transformations. If more than one product is possible, draw structures for all products and indicate the major product. If stereoisomers are possible, draw all isomers, and indicate the major stereoisomer. + a. C. d. e. НО. НО. CI OH OH X PCC NaOCH HBr SOCI J.... CI OH Focus
1. RCOOOH 2. CgHgMgBr 3. Mild H30* 4. H2CRO4 5. CgHgMgBr 6. H3O*, heat Work through the synthesis on a separate sheet of paper, and then draw the structure of the final organic product. • You do not have to consider stereochemistry. • Do not draw organic or inorganic by-products. opy aste C. CH3 -CH3 ČH3 49%
Br2 ? How many moles of Br are required to completely halogenate the alkene? A. Three moles B. Four moles C. Two moles D. One mole What is the expected arrangement of the bromine atoms relative to each other among the carbon involved in pi bonding? A. trans-configuration B. anti-conformation C. cis-configuration D. syn-conformation What happens to bromine when it is adjacent to an alkene during a chemical reaction? A. Bromine becomes polarized. B. Bromine becomes acidic. C. Bromine becomes hybridized. D. Bromine becomes stable. The relative arrangement of bromine atoms in the product is primarily due to: A. Hydrogen bonding B. Electronegativity C. Atomic weight D. Repulsion What is your observation after the reaction? A. Bromine water decolorizes. B. A brown precipitate forms. C. The alkene becomes denser. D. A yellow flame is produced.
22. Write the structure(s) of the product(s) for each of the reactions below. a. b. C. 1. NBS, CC14 2. KOC(CH3)3, HOC(CH3)3 H₂O H₂SO4 HBr ether
12. What is the product of the following sequence of reactions? A. I B. II C. III D. IV I NaOH NaNH, III IV NH₂ 1