Which of the Following Defines the Heat of Formation of Cr₂O₃

question 36

Multiple Choice

Which of the following defines the heat of formation of Cr₂O₃ (s) ?

• A) 2 Cr (s) + 3 O (g)→ Cr₂O₃ (s)
• B) 2 Cr (s) + ³/₂ O₂ (g)→ Cr₂O₃ (s)
• C) 4 Cr (s) + 3 O₂ (g)→ 2 Cr₂O₃ (s)
• D) Cr₂ (s) + ³/₂ O₂ (g)→ Cr₂O₃ (s)
• E) none of these

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