What is the heat of reaction for C₂H₄ + 3O₂ -> 2CO₂ + 2H₂O, if heat

Question

What is the heat of reaction for C₂H₄ + 3O₂ -> 2CO₂ + 2H₂O, if heat of formation of C₂H₄, O₂, CO₂, and H₂O are 10 J, 5 J, 6 J and 2 J respectively?

Options:

A . -4 J

B . -2 J

C . 0

D . 4 J

Answer: Option A
Answer: (a).-4 J

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