Exploring Potential Energy Diagrams and Reaction Energies

What does a potential energy diagram illustrate?

• The potential energy change during a reaction

• The speed of a reaction

• The pressure change during a reaction

• The temperature change during a reaction

In a potential energy diagram, what do the reactants and products represent?

• The pressure change

• The temperature change

• The speed of the reaction

• The initial and final states of a reaction

What is the activation energy in a potential energy diagram?

• The energy required to start a reaction

• The energy released during a reaction

• The energy required to maintain a reaction

• The energy required to end a reaction

What does the reverse activation energy represent?

• The energy to go from products to reactants

• The energy to go from reactants to products

• The energy to maintain the reaction

• The energy to stop the reaction

What is the activated complex in a potential energy diagram?

• The highest energy state during a reaction

• The lowest energy state during a reaction

• The final state of the products

• The initial state of the reactants

What does Delta H (enthalpy) represent in a potential energy diagram?

• The energy required to maintain a reaction

• The energy released during a reaction

• The energy required to start a reaction

• The difference in energy between products and reactants

How does a catalyst affect a reaction?

• It increases the energy required for the reaction

• It speeds up the reaction without changing the reactants or products

• It slows down the reaction

• It changes the reactants into different products

What is the effect of a large activation energy on a reaction?

• The reaction occurs less frequently

• The reaction occurs more frequently

• The reaction speed is unaffected

• The reaction stops completely

How can you identify an exothermic process in a potential energy diagram?

• The energy level fluctuates

• The energy level remains constant

• The energy level drops from reactants to products

• The energy level rises from reactants to products

What is the main difference between exothermic and endothermic processes?

• Both processes absorb energy

• Both processes release energy

• Exothermic processes absorb energy, while endothermic processes release energy

• Exothermic processes release energy, while endothermic processes absorb energy