What is the heat of reaction for CH₄ + 2O₂ -> CO₂ + 2H₂O, if heat of

Question

What is the heat of reaction for CH₄ + 2O₂ -> CO₂ + 2H₂O, if heat of formation of CH₄, O₂, CO₂ and H₂O are 10 J, 5 J, 6 J, and 12 J respectively?

Options:

A . -10 J

B . 10 J

C . -20 J

D . 20 J

Answer: Option B
Answer: (b).10 J

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