Use the Information Provided to Determine ΔH°_rxn for the Following

question 114

Multiple Choice

Use the information provided to determine ΔH°_rxn for the following reaction: ΔH°_f (kJ/mol) 3 Fe₂O₃(s) + CO(g) → 2 Fe₃O₄(s) + CO₂(g) ΔH°_rxn = ?
Fe₂O₃(s) -824
Fe₃O₄(s) -1118
CO(g) -111
CO₂(g) -394

• A) +277 kJ
• B) -577 kJ
• C) -47 kJ
• D) +144 kJ
• E) -111 kJ

---

Definitions:

Protein

is an essential nutrient made of amino acids, critical for the building, maintenance, and repair of tissues in the body.

Zygote

The initial cell formed when two gamete cells (e.g., sperm and egg) are joined by means of sexual reproduction. It represents the earliest stage of development in many organisms.

Reflexes

Automatic responses to specific stimuli that do not require conscious thought, demonstrating the body's inherent ability to protect and organize itself.