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QUESTION
Which of the following substances has both a standard enthalpy of formation and standard free energy of formation equal to 0?
Which of the following substances has both a standard enthalpy of formation and standard free energy of formation equal to 0?
a) I (s)
b) Br2 (g)
c) H2O (l)
d) H3O+ (aq)
e) C (diamond)
Please explain why the answer is so, thank you :)
