consider the following potential energy diagram. which arrow represents the heat of reaction (enthalpy…

consider the following potential energy diagram. which arrow represents the heat of reaction (enthalpy change) of the forward reaction?
Answer
Explanation:
Step1: Recall the definition of enthalpy change ($\Delta H$)
Enthalpy change of a forward reaction is the difference in potential energy between products ($X + Y$) and reactants ($A + B$).
Step2: Identify the arrow representing this difference
Looking at the potential - energy diagram, the arrow (g) represents the vertical difference in potential energy between the products ((X + Y)) and the reactants ((A + B)).
Answer:
- (g)