What is the heat of reaction for 2H₂ + O₂ -> 2H₂O, if heat of formation

Question

What is the heat of reaction for 2H₂ + O₂ -> 2H₂O, if heat of formation of H₂, O₂, and H₂O are 2 J, 5 J, and 10 J respectively?

Options:

A . 2 J

B . 5 J

C . 8 J

D . 11 J

Answer: Option D
Answer: (d).11 J

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