Chapter 8.5, Problem 6CC

(a)

Interpretation Introduction

Interpretation:

The given isomeric alkenes are needed to be arranged in increasing order of stability.

Concept introduction:

Constitutional isomers are having the same molecular formula and different bond connectivity between the atoms.

The more substituted alkenes are more stable as compared to less substituted alkenes. Because the more alkyl group attachment to a double bond make it more stable due to the ⁺I effect of alkyl groups. It means the alkyl groups will push electrons towards the double bonded carbon atoms, so the double bond becomes strengthened and highly stabilized.

(b)

Interpretation Introduction

Interpretation:

The given isomeric alkenes are needed to be arranged in increasing order of stability.

Concept introduction:

Constitutional isomers are having the same molecular formula and different bond connectivity between the atoms.

The more substituted alkenes are more stable as compared to less substituted alkenes. Because the more alkyl group attachment to a double bond make it more stable due to the ⁺I effect of alkyl groups. It means the alkyl groups will push electrons towards the double bonded carbon atoms, so the double bond becomes strengthened and highly stabilized.