Which of the Following Has a Standard Enthalpy of Formation

question 141

Multiple Choice

Which of the following has a standard enthalpy of formation value (ΔH°_f) of zero at 298 K?

• A) H₂O(g)
• B) O(g)
• C) H₂O(l)
• D) O₂(g)
• E) O₃(g)

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