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For Which Reaction Is ΔH Approximately (Or Exactly) Equal to ΔU

Question 92

Multiple Choice

For which reaction is ΔH approximately (or exactly) equal to ΔU?

A) H₂(g) + Br₂(g) → 2HBr(g)
B) H₂O(l) → H₂O(g)
C) CaCO₃(s) → CaO(s) + CO₂(g)
D) 2H(g) + O(g) → H₂O(l)
E) CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l)

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