Arrange the following alkenes in order of decreasing stability. 1. 1-pentene 2. cis-2-pentene 3. trans-2-pentene 4....

Arrange the following alkenes in order of decreasing stability.

1. 1-pentene 2. cis-2-pentene 3. trans-2-pentene 4. 2-methyl-2-butene

Solutions

Expert Solution

There are 3 factors that influence alkene stability:
1. Degree of substitution, i.e. how many alkyl groups are attached to the C=C ? More highly alkylated alkenes are more stable, so tetra > tri > di > mono-substituted.
2. Stereochemistry: trans > cis due to reduced steric interactions when R groups are on opposite sides of the double bond.
3. Conjugated alkenes are more stable than isolated alkenes.

From above data 2-methyl-2-butene is tri substituted alkene . So that will be more stable alkene.

cis-2-pentene and trans-2-pentene are di substituted alkenes. So these will be less stable than tri substituted alkene and in that trans isomer will be more stable than cis isomer.

Finally 1-pentene is mono substituted alkene from the above group and will be the least stable alkene.

So the decreasing order of the stabilty will be

2-methyl-2-butene > trans-2-pentene > cis-2-pentene > 1-pentene

queen_honey_blossom answered 1 year ago

Next > < Previous

Related Solutions

Defend or refute: Unsymmetrical geometric isomers (cis and trans isomers) of alkenes can be distinguished using...

Defend or refute: Unsymmetrical geometric isomers (cis and trans isomers) of alkenes can be distinguished using proton NMR spectroscopy.

1. Which of the following alkenes can show geometric isomerism: 2,3-dichloro-2-pentene, 4-chloro-3-ethyl-3-hexene, 3-chloro-2-methyl-2-butene, and 3-chloro-2-methyl-1-butene? Please...

1. Which of the following alkenes can show geometric isomerism: 2,3-dichloro-2-pentene, 4-chloro-3-ethyl-3-hexene, 3-chloro-2-methyl-2-butene, and 3-chloro-2-methyl-1-butene? Please provide detailed steps and how to draw the structures as well.

Arrange the following in the decreasing order (most important first) of their importance, for the welfare...

Arrange the following in the decreasing order (most important first) of their importance, for the welfare of human society. Give reasons for your answer. Biogas, citric acid, penicillin and curd.

1a. Arrange BaS, GaP, CaO, RbCl in order of decreasing lattice energy. (2) 1b. Arrange KBr, InAs, LiCl, SrSe, ZnS in order of...

1a. Arrange BaS, GaP, CaO, RbCl in order of decreasing lattice energy. (2) 1b. Arrange KBr, InAs, LiCl, SrSe, ZnS in order of increasing lattice energy. (

Describe the difference between cis-acting and trans-acting elements. Also list whether the following elements are cis- or trans-acting:

Describe the difference between cis-acting and trans-acting elements. Also list whether the following elements are cis- or trans-acting: A) β-galactosidase B) Operator site C) LacI repressor protein D) Lactose E) Permease F) Promoter site

For each of the following, indicate if it is cis-acting or trans-acting

For each of the following, indicate if it is cis-acting or trans-actingA regulatory gene that codes for a transcription factor _______________A promoter _______________An operator _________________An enhancer _________________

When either cis- or trans- 2 bromocyclohexanol is reacted with HBr, only the trans- 1,2- dibromocyclohexane...

When either cis- or trans- 2 bromocyclohexanol is reacted with HBr, only the trans- 1,2- dibromocyclohexane is formed. Explain.

Arrange the following atoms or ions in order of decreasing ionization energy: K+, Cl-, S2-, Ca2+...

Arrange the following atoms or ions in order of decreasing ionization energy: K+, Cl-, S2-, Ca2+ Please show how you get the answer. I am confused because all of the ions would be like the nearest noble gas. So wouldn't all of them have the same ioniation energy?

Arrange the following atoms or ions in order of decreasing ionization energy: K+, Cl-, S2-, Ca2+...

Arrange the elements in decreasing order of first ionization energy. In, Ge, Se, Cs

PART A:Arrange the elements in decreasing order of first ionization energy.Rank from highest to lowest first ionization energy. To rank items as equivalent, overlap them.In, Ge, Se, CsPART B:Arrange the elements in order of decreasing first ionization energy. Rank from highest to lowest first ionization energy. To rank items as equivalent, overlap them.element x (radius (pm): 110)element y (radius (pm): 199)element z (radius (pm): 257)

Subjects