Answer to Question #88039 in General Chemistry for Yilian Baro

Question

create your own potential energy diagrams for three chem reactions , then determine the value of (triangle H) for each reaction using the diagram

generic reactions : synthesis A+B=AB
reactants: A+B -30kJ
products: AB 25kJ
Activation Energy: 35kJ

generic reactions: single replacement C+AB=CB+A
reactants: C+AB 65kJ
products: CB+A 30kJ
activation energy: 85kJ

generic reactions: double replacement AB+CD =AD+BC
reactants : AB+CD 10kJ
products: AD+BC 60kJ
activation energy: 75kJ
-Use the enthalpy values in the chart ^ for each generic reaction provided and use all of the elements in your potential energy diagrams

Answer 1

The figure below shows basic potential energy diagrams for an endothermic (A) and an exothermic (B) reaction. Recall that the enthalpy change (ΔH)

(ΔH) is positive for an endothermic reaction and negative for an exothermic reaction.