Problem: For which one of the following reactions is ΔH°rxn equal to the heat of formation of the product?A) 12C (g) + 11H2 (g) + 11O (g) → C6H22O11 (g)B) N2 (g) + 3H2 (g) → 2NH3 (g)C) P (g) + 4H (g) + Br (g) → PH4Br (l)D) 1/2 N2 (g) + O2 (g) → NO2 (g)E) 6C (s) + 6H (g) → C6H6 (l)

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For which one of the following reactions is ΔH°rxn equal to the heat of formation of the product?

A) 12C (g) + 11H2 (g) + 11O (g) → C6H22O11 (g)
B) N2 (g) + 3H2 (g) → 2NH3 (g)
C) P (g) + 4H (g) + Br (g) → PH4Br (l)
D) 1/2 N2 (g) + O2 (g) → NO2 (g)
E) 6C (s) + 6H (g) → C6H6 (l)

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