(a)
Interpretation:
From the given set of
Concept introduction:
Alkene Metathesis or olefin metathesis
This breaks the double bond of an alkene and then rejoins the fragments.
When the fragments are joined, the new double bond is formed between two
Terminal alkene gives the best yields of a single alkene product in metathesis because one of the products is ethane, which is equally removed from the reaction mixture, thus shifting the equilibrium in favor of the other new alkene product.
(b)
Interpretation:
The suitable alkenes should be identified which is used in metathesis reaction.
Concept introduction:
Alkene Metathesis or olefin metathesis
This breaks the double bond of an alkene and then rejoins the fragments.
When the fragments are joined, the new double bond is formed between two
that were not previously bonded . Alkenes also undergoes metathesis.
Terminal alkene gives the best yields of a single alkene product in metathesis because one of the products is ethane, which is equally removed from the reaction mixture, thus shifting the equilibrium in favor of the other new alkene product.
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Organic Chemistry
- Metathesis of which of the following sets of alkenes leads to the highest yield of a single alkene? 1. 1-butene and 1-pentene 2. 2-butene and 3-hexene 3. 2-butene and 1-pentene b. What kinds of alkenes should be used in metathesis reactions that use two different alkenes as starting materialsarrow_forward∆H° values obtained for a series of similar reactions are one set of experimental data used to determine the relative stability of alkenes. Explain how the following data suggest that cis-but-2-ene is more stable than but-1-ene (Section 12.3A).arrow_forwardΔH° values obtained for a series of similar reactions are one set ofexperimental data used to determine the relative stability of alkenes. Explain how the cis-but-2-ene is more stable than but-1-enearrow_forward
- Several factors can affect alkene stability. Explain why alkene A is more stable than alkene B even though both contain disubstituted carbon–carbon double bonds.arrow_forwardAmong the choices given in the picture: 1. which is the least stable alkene? 2. which is a tetradistributed alkene? 3. which structure is trans? 4. arrange the alkenes in terms of increasing stabilityarrow_forwardHow many different alkenes can be formed from the haloalkane in Figure 20? Take stereoisomerism into account. * 1 2 3 4 This haloalkane will not form an elimination product.arrow_forward
- When you react ammonia with a halogenated Alkane will you get only one organic product? Why or why notarrow_forwardIt is sometimes necessary to isomerize a cis alkene to a trans alkene in a synthesis, a process that cannot be accomplished in a single step. Using the reactions you have learned in Chapters 8–12, devise a stepwise method to convert cis-but-2-ene to trans-but-2-ene.arrow_forwardA haloalkane reacts with a strong base to yield only one alkene product. Select the possible structures that can give this result from Figure 9. * A B C Darrow_forward
- Name the alkene. Be sure to indicate stereochemistry and use hyphens (-) not endashes (–). The alkene is named:arrow_forwardHow many moles of Bra are required to completely halogenate the alkene?A. One moleB. Two molesC. Three molesD. Four moles What is the expected arrangement of the bromine atoms relative to each other amongthe carbon involved in pi bonding?A. anti-conformationB. syn-conformationC. trans-configurationD. cis-configuration What happens to bromine when it is adjacent to an alkene during a chemical reaction?A. Bromine becomes stable. (? kasi before brown siya/acidic tas naging colorless? Jk ewan)B. Bromine becomes polarized.C. Bromine becomes hybridized.D. Bromine becomes acidic. The relative arrangement of bromine atoms in the product is primarily due to:A. ElectronegativityB. RepulsionC. Hydrogen bondingD. Atomic weightWhat is your observation after the reaction?A. A yellow flame is produced.B. Bromine water decolorizes.C. The alkene becomes denser.D. A brown precipitate forms.arrow_forwardRank the alkenes from most stable to least stable.arrow_forward