Hess’s Law Calculation

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What is the enthalpy change for the reaction \(CO_2(g) + H_2(g) \to CO(g) + H_2O(g)\) in kJ mol^−1 given:
1. \(2CO(g) + O_2(g) \to 2CO_2(g)\), ΔH = −566 kJ mol^−1
2. \(2H_2(g) + O_2(g) \to 2H_2O(l)\), ΔH = −572 kJ mol^−1
3. \(H_2O(g) \to H_2O(l)\), ΔH = −44 kJ mol^−1

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Hint

Apply Hess’s law: reverse and scale the given reactions to match the target reaction

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Complete Answer

+41 kJ mol^−1

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