If a reaction is exothermic, then the reverse reaction is endothermic, thereby exhibiting a positive delta H (Option A).
An exothermic chemical reaction is any process that releases energy after its finalization, which is used by a biological system to couple with a given metabolism reaction by using this energy in an endothermic reaction such as occurs in the case of adenosine triphosphate or ATP hydrolysis.
Since an exothermic chemical reaction then it has a negative delta H (difference of energy) and therefore the reverse process will have a positive delta H.
Therefore, with this data, we can see that an exothermic chemical reaction releases energy and therefore has a negative delta H which is a value indicating the energy released, while the reverse process has a positive delta H because absorb energy.
Complete question:
If a reaction is exothermic, what is true of its reverse reaction?
A) ∆H > 0
B) ∆H < 0
C) ∆H = 0
D) Not enough info
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