Potential Energy Diagrams Flashcards
What is the y-axis labeled as in energy diagrams?
Potential Energy
What is the x-axis labeled as for energy diagrams?
Reaction progress.
When the energy of reactants is greater than energy of products what is the reaction considered to be?
Exothermic (energy is lost, delta H=negative value).
What is the “hill” in the diagram labeled as?
Transition state.
What is the energy difference between the transition state and reactants called?
Forward activation energy.
What happens when a catalyst is added?
The activation energy is lowered, speeding up a reaction.
What takes up more activation energy the activation energy for the transition state or for a reaction intermediate?
The transition state takes up more energy because the reaction intermediate is short lived and requires less activation energy.
When the energy of products is greater than energy of reactants what is the reaction considered to be?
Endothermic (energy is gained, delta H=positive value)
