Two gases, A and B, are at equilibrium in a sealed cylinder. Individually, gas A is colorless, while gas B is dark colored. The

Answer:

In group I, the most potent acid is .

For group II, the strongest acid is .

In group III, the strongest acid identified is .

Explanation:

Group I:

The strength of an acid is influenced by the stability of the conjugate base formed after H+ ion loss.

From the acids provided, the following conjugate bases result upon H+ release:

In , the negative charge is spread across three electronegative oxygen atoms, rendering it more stable compared to the other two conjugate bases.

Thus, becomes the strongest acid in this group.

Group II:

The H-Se bond is less robust than H-S bonds, making it more acidic since breaking the H-Se bond more easily releases H+.

For , arsenic (As) has lower electronegativity than selenium (Se). Due to the higher electronegativity of Se, it attracts the electrons of the H-Se bond, facilitating the removal of H+.

Consequently, is the strongest acid in this grouping.

Group III:

Acidity is also impacted by the distance between bonds and the central atom's electronegativity.

In this scenario, electronegativity takes precedence over bond distance.

Among the elements listed, chlorine (Cl) exhibits the highest electronegativity. This significant electronegativity causes the electrons to be pulled toward Cl, making the release of H+ easier compared to the other two.

Therefore, is the strongest acid in this set.

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.