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For CO(g) + H₂O(g) → CO₂(g) + H₂(g) , Δ H = -41.20 kJ/mol at 298 K, what is Δ U ? ( R = 8.314 J/mol·K )

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-43.7 kJ/mol 41.2 kJ/mol -38.7 kJ/mol -41.2 kJ/mol Correct

For Δ ng = 2 - 2 = 0 , Δ H = Δ U + Δ ng RT . Since Δ ng = 0 , Δ U = Δ H = -41.20 kJ/mol .

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