Question

if a reaction is exothermic, what is true of its reverse reaction? answer: a δh>0 b δh<0 c δh=0 d not enough information is given.

Explanation:

• An exothermic reaction has $\Delta H<0$ (releases heat).
• The reverse of an exothermic reaction is endothermic.
• An endothermic reaction has $\Delta H > 0$ (absorbs heat).

Answer:

A. $\Delta H>0$