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Imagine a reaction in which methane gas combusts at a constant pressure of 1 atm and...

Imagine a reaction in which methane gas combusts at a constant pressure of 1 atm and a constant temperature of 25 ˚C. Which of the following statements about this reaction is correct?

a. Since the system does work on the surroundings, ∆U > ∆H.

b. Since the surroundings do work on the system, ∆U > ∆H.

c. Since the system does work on the surroundings, ∆H > ∆U.

d. Since the surroundings do work on the system, ∆H > ∆U.

e. The difference between ∆U and ∆H is negligible.

Option A is not correct.

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