Practice question
Question
What is the relationship between Δ H and Δ U for the reaction 2SO₂(g) + O₂(g) → 2SO₃(g) at 298 K? (R = 8.314 J/mol·K)
Explanation
Δ H = Δ U + Δ ng RT. Here, Δ ng = 2 - 3 = -1, RT = 8.314 × 298 × 10⁻³ = 2.48 kJ, so Δ H = Δ U - 2.48 kJ.
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