In the reaction 2H₂ + O₂ -> 2H₂O, if the heat liberated is 50 J, what i

Question

In the reaction 2H₂ + O₂ -> 2H₂O, if the heat liberated is 50 J, what is the heat of formation of H₂O?

Options:

A . -25 J

B . 25 J

C . -50 J

D . 50 J

Answer: Option A
Answer: (a).-25 J

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Question 7. What is the heat of reaction for CH₄ + 2O₂ -> CO₂ + 2H₂O, if heat of formation of CH₄, O₂, CO₂ and H₂....10 J, 5 J, 6 J, and 12 J respectively?

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