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- Which of the following is most soluble in basic medium? a. cyclopropane b. 1,3-cyclobutadiene c. 1,3-cyclopentadiene d. benzeneMost methods of making alkenes yield predominately the more stable isomer, usually the trans. Outline all steps in the conversion of a mixture of 75% trans-2-pentene and 25% cis-2-pentene into essentially pure cis-2-pentene.Name the major product of the reaction between (S)-2-bromohexane and KCH3COO. Be specific with the configuration.
- A chemist allows some pure (2S,3R)-3-bromo-2,3-diphenylpentane to react with a solution of sodium ethoxide(NaOCH2CH3) in ethanol. The products are two alkenes: A (cis-trans mixture) and B, a single pure isomer. Under thesame conditions, the reaction of (2S,3S)-3-bromo-2,3-diphenylpentane gives two alkenes, A (cis-trans mixture) and C.Upon catalytic hydrogenation, all three of these alkenes (A, B, and C) give 2,3-diphenylpentane. Determine the structuresof A, B, and C; give equations for their formation; and explain the stereospecificity of these reactionsWhich of the following will not give a positive result when subjected to Baeyer's test for unsaturation? Choices: alkane alkene alkyne benzene Options 1 and 4Table 6.4. Oxidation: Reaction with Baeyer’s reagent (cold, dilute, neutral, aqueous KMnO4) Write (+) if the reaction is positive, (-) if negative. SAMPLE OBSERVATIONS +/- cyclohexane cyclohexene benzene toluene acetylene Enumerate the classes of hydrocarbons that are oxidizable by Baeyer’s reagent. ________________________________________________________________________ ________________________________________________________________________ What is the structural feature of these classes of hydrocarbons? ________________________________________________________________________ ________________________________________________________________________
- Ethane and ethyne can be differentiated using Bromine water test and oxidation of KMnO4. True or FalseUpon successful bromination of an alkene, what is the molecular weight increase of the compound? The number commonly associated with petroleum products. Often mentioned on refueling stations. The difference in molecular weights of chloropropane and 2-chloropropane When a haloalkane is heated with alcoholic solution of potassium hydroxide, what will be the result? What does Kerosene tends to contain these organic compounds? Wet Filter paper containing iodoform weighs 2.1 grams. Upon drying only 0.6 grams of iodoform is left. Assuming 1 gram of moisture is removed, what is the weight of the filter paper?here's the reaction to be used for reference: C2H4 + H2 --> C2H6 1. What type of reaction is involved in C2H4 + H2 --> C2H6? 2. What is C2H4 in the reaction? 3. What is the name of the product in the reaction? a. ethane b. ethene c. ethyne
- A chemist allows some pure (2S,3R)-3-bromo-2,3-diphenylpentane to react with a solution of sodium ethoxide(NaOCH2 CH3) in ethanol. The products are two alkenes: A (cis-trans mixture) and B, a single pure isomer. Under the same conditions, the reaction of (2S,3S)-3-bromo-2,3-diphenylpentane gives two alkenes, A (cis-trans mixture) and C. Upon catalytic hydrogenation, all three of these alkenes (A, B, and C) give 2,3-diphenylpentane. Determine the structures of A, B, and C; give equations for their formation; and explain the stereospecificity of these reactions.How many alkenes with different stability can be formed from the haloalkane in Figure 8The same alkane is obtained from the catalytic hydrogenation of both alkene A and alkene B. The heat of hydrogenation of alkene A is 29.8 kcal/mol, and the heat of hydrogenation of alkene B is 31.4 kcal/mol. Which alkene is more stable?