Estimate the Enthalpy Change for the Combustion of One Mole $\equiv$

question 109

Multiple Choice

Estimate the enthalpy change for the combustion of one mole of acetylene, C₂H₂, to form carbon dioxide and water vapor.
BE(C-H) = 456 kJ/mol
BE(C $\equiv$ C) = 962 kJ/mol
BE(O=O) = 499 kJ/mol
BE(C=O) = 802 kJ/mol
BE(O-H) = 462 kJ/mol

• A) +1010 kJ/mol
• B) +653 kJ/mol
• C) -155 kJ/mol
• D) -1010 kJ/mol
• E) -1759 kJ/mol

---

Definitions:

Hybrid Inviability

A postzygotic barrier where offspring resulting from the mating of two different species fail to survive to reproductive maturity.

Mechanical Isolation

A form of reproductive isolation where two species are prevented from interbreeding due to physical incompatibilities that prevent successful mating or fertilization.

Magic Traits

Specific traits in evolutionary biology that influence both mate choice and survival, facilitating speciation.

Genome

The complete set of genetic material, including all of the genes and their sequencing information, present in an organism or a cell.