Calculate the standard enthalpy of reaction (ΔH°) for: 2CO(g) + O₂(g) → 2CO₂(g).
(ΔH°f for CO = -110.5 kJ/mol; ΔH°f for CO₂ = -393.5 kJ/mol)
- -283.0 kJ
- -566.0 kJ
- -504.0 kJ
- -1008.0 kJ
📝 Batafsil tushuntirish
ΔH° = ΣΔH°f(products) - ΣΔH°f(reactants).ΔH° = [2 × (-393.5)] - [2 × (-110.5) + 0] = -787.0 + 221.0 = -566.0 kJ.