The Standard Enthalpy of Formation of H₂O(l) at 298 K

question 73

Multiple Choice

The standard enthalpy of formation of H₂O(l) at 298 K is -285.6 kJ/mol. Calculate the change in internal energy for the following process at 298 K:
H₂(g) + 1/2O₂(g) → H₂O(l)

• A) -285.6 kJ/mol
• B) 283.1 kJ/mol
• C) -289.3 kJ/mol
• D) -281.9 kJ/mol
• E) -283.1 kJ/mol

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