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Which one of the following reactions, when carried out at 25 °C and 101.3 kPa pressure,...

Which one of the following reactions, when carried out at 25 °C and 101.3 kPa pressure, has an enthalpy change corresponding to the standard molar enthalpy of formation, ∆Hf°, of C2H5OH (l) ?

  • A. C2H5OH (l) → 2 C (g) + 6 H (g) + O (g)
  • B. C2H6 (g) + 1/2 O2 (g)  → C2H5OH (l)
  • C. 4 C (s) + 6 H2 (g) + O2 (g) → C2H5OH (l)
  • D. C2H5OH (l) + 3 O2 (g) → 2 CO2 (g) + 3 H2O (l)

  • E. 2 C (s) + 3 H2 (g) + 1/2 O2 (g) → C2H5OH (l)

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