For a complex reaction, the reaction progress curve __. 0.25 Points is a flat line has only one peak has several hills and valleys shows energy versus pressure

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.

2licl + 3o2 i yook the test and it was correct.