Consider the following thermochemical data: (1) C(graphite) + O₂(g) → CO₂(g) ΔH =…

CHEMISTRY · Single correct · A Level · Chemistry · Energetics · Energetics

Problem

Consider the following thermochemical data: (1) C(graphite) + O₂(g) → CO₂(g)  ΔH = –393.5 kJ (2) 2CO(g) + O₂(g) → 2CO₂(g)  ΔH = –566.0 kJ Using these reactions, determine ΔH for CO(g) + 12\tfrac{1}{2}O₂(g) → CO₂(g). (a) −566 kJ-566\,\text{kJ} (b) + 283 kJ+\,283\,\text{kJ} (c) −283 kJ-283\,\text{kJ} (d) −393.5 kJ-393.5\,\text{kJ}

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