The Standard Enthalpy of Formation of NiSO₄(s) at 25 °C

question 74

Multiple Choice

The standard enthalpy of formation of NiSO₄(s) at 25 °C is -872.9 kJ/mole. The chemical equation to which this value applies is:

• A) 1/2 Ni(s) + 1/2 S(s) + 1/2 O₂(g) → 1/2 NiSO₄(s)
• B) Ni(s) + S(s) + 4 O(g) → NiSO₄(s)
• C) Ni(s) + S(s) + 2 O₂(g) → NiSO₄(s)
• D) Ni(s) + 1/8 S₈(s) + 1/2 O₂(g) → NiSO₄(s)
• E) NiSO₄(s) → Ni(s) + S(s) + 4 O(g)

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