Which of the following processes that occur over the course of the reaction above gives off heat? 2 H₂ + O₂ → 2 H₂O

Question

Quizplus · Accepted Answer

Forming O-H gives off heat as it is an exothermic process. Breaking H-H, breaking O-O, and breaking O-H are all endothermic processes that require heat input. The process of both breaking and forming bonds can either be endothermic or exothermic depending on the specific bonds involved, so it cannot definitively be said whether it gives off heat in this reaction.

Which of the Following Processes That Occur Over the Course