Problem: For which of the following reaction(s) is the enthalpy change for the reaction equal to ∆Hf° of the product? I. 2 F (g) → F2 (g) II. H2 (g) + O2 (g) → H2O2 (l) III. C (graphite) → C (diamond)   A. Only I B. Only II C. Only III D. I and II E. II and III

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For which of the following reaction(s) is the enthalpy change for the reaction equal to ∆Hf° of the product?

I. 2 F (g) → F2 (g)

II. H2 (g) + O2 (g) → H2O2 (l)

III. C (graphite) → C (diamond)

A. Only I

B. Only II

C. Only III

D. I and II

E. II and III

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