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Nataly
1 month ago
7

Question 1: Which of the following statement is false about conjugated systems?

Chemistry
1 answer:
Tems11 [2.7K]1 month ago
8 0

Answer:

A conjugated system can solely consist of two alkenes: Incorrect

B. A cumulated diene is not as stable as an isolated diene.

Incorrect

Explanation:

A. A conjugated system has greater stability compared to an unconjugated system.: Correct

Owing to resonance, a conjugated system exhibits increased stability.

B. The s-trans form is preferred over the s-cis form.: Correct

Because of repulsion in the s-cis form, they are less stable.

C. A conjugated system has multiple resonance forms.Correct

This contributes to their stability.

D. A conjugated system can only comprise two alkenes: Incorrect

A conjugated system may consist of alternating double and triple bonds.

2) A trans alkene liberates less heat during hydrogenation compared to a cis alkene.

Correct

Trans alkenes are more stable than their cis counterparts, resulting in a lower heat of hydrogenation for trans alkenes.

B. A cumulated diene is less stable than an isolated diene.

Incorrect

C. Numerous products can potentially form when a conjugated diene reacts with HBr. Correct

This can result in either 1,2 or 1,4 addition.

D. Conjugated systems occur only between sp2-hybridized atoms.

Correct

Conjugation enables resonance, which is feasible in sp2 systems.

E. Conjugated double bonds rely on unhybridized p-orbitals that align with one another.

Correct

The double bond forms as a pi bond due to the lateral overlap of unhybridized p orbitals.

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