Given CaCO₃(s) → CaO(s) + CO₂(g), ΔH = +178.5 kJ, what is the enthalpy of reaction for CaO + CO₂ → CaCO₃?
University of Ilorin CHM101 2026-exam past question
- −178.5 kJ
- +178.5 kJ
- −813.6 kJ
- +813.6 kJ
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