Describe how you would use the information depicted in the potential energy diagram below to determine the enthalpy change of the reaction and if the reaction is endothermic or exothermic.

Question

theloshua · Answer

attachment

theloshua · Answer

I understand that it is endothermic, I just don't get how I use it to determine the enthalpy change of the reaction

photon336 · Answer

The Y axis is energy and the X axis is reaction progress.

If you look at the graph you can see two things: the first is that you subtract the difference in energy (products - reactants)

photon336 · Answer

Usually they would give you energy values like point C and point A and you would subtract C-A

theloshua · Answer

oh sorry, hey

photon336 · Answer

They would have to give you numbers on the Y axis for that question