In 4Al + 3O₂ → 2Al₂O₃, ΔH = −3351 kJ. The ΔHf° of Al₂O₃ is:
University of Ilorin CHM101 2026-exam past question
- −1675.5 kJ/mol
- −3351 kJ/mol
- −1000 kJ/mol
- −1500 kJ/mol
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