Practice: Which of the following statements is true regarding the energy diagram provided?
i. The reaction is endothermic.
ii. The activation energy is +10 kJ.
iii. The reaction releases energy.
iv. The enthalpy of the reaction is –25 kJ.
An Energy Diagram is a curved plot on a graph that Illustrates the energies of reactants, products and transition state as a reaction occurs.
Energy Diagram
Concept #1: Energy Diagram
Example #1: What is the energy value for the product within the following energy diagram?
Concept #2: Speed of Reactions
Example #2: Which reaction will occur in the shortest amount of time?
a) Reaction A (Ea = 143 kJ)
b) Reaction B (Ea = 80 kJ)
c) Reaction C (Ea = 215 kJ)
Concept #3: Stability
Practice: Which of the following reactions proceeds the slowest?
Reaction 1 Reaction 2 Reaction 3
