The Reaction of Ethylene (C₂H₄) with Butadiene (C₄H₆) to Form

question 41

Multiple Choice

The reaction of ethylene (C₂H₄) with butadiene (C₄H₆) to form cyclohexene (C₆H₁₀) has an activation energy (E_a) of 115 kJ/mol. The reverse reaction (decomposition of cyclohexene to ethylene and butadiene) has an activation energy of 287 kJ/mol. What is the heat of reaction, Δ H_rxn, for the forward reaction?

• A)+115 kJ/mol
• B)+287 kJ/mol
• C)−287 kJ/mol
• D)+172 kJ/mol
• E)−172 kJ/mol

---

Definitions:

Abuse

Involves the mistreatment of an individual, often resulting in physical, emotional, or sexual harm, frequently within a context of power imbalance.

Mesoderm

The middle layer of an embryo in early development that gives rise to muscles, bones, and circulatory systems.

Endoderm

The innermost layer of cells or tissue of an embryo in early development, giving rise to the digestive and respiratory systems.

Ectoderm

The outermost layer of cells or tissue of an embryo in early development, giving rise to the formation of the nervous system and skin.