Reaction Coordinate Diagrams

What characteristic of the exothermic potential energy diagram indicates that energy is released in the reaction?

• The peak is higher than the initial state

• The final state is lower than the initial state

• The curve is below the initial state throughout

• The curve returns to the initial state

Tags

NGSS.HS-PS1-4

What does the peak of the curve in the reaction energy profile represent?

• Reactants

• Products

• Activated Complex

• Enthalpy

Tags

NGSS.HS-PS1-4

Consider the following energy diagrams, which diagrams represent endothermic reactions?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Tags

NGSS.HS-PS1-4

Refer to the diagram. What does the orange line represent in the energy diagram?

• Energy path of the reaction with a catalyst

• Energy path of the reaction without a catalyst

• Total energy absorbed by the catalyst

• Difference in energy between reactants and products

Tags

NGSS.HS-PS1-4

What is the term used to describe the minimum energy that must be overcome to start a chemical reaction?

• Enthalpy

• Transition State

• Activation energy

• Reaction Coordinate

Tags

NGSS.HS-PS1-5

What does a reaction coordinate diagram typically represent in a chemical reaction?

• The change in temperature over time

• The progress of a reaction over time

• The energy changes during a reaction

• The concentration of reactants and products

In a reaction coordinate diagram, what does the peak of the curve represent?

• The reactants

• The products

• The transition state

• The activation energy

Which of the following best describes the activation energy in a reaction coordinate diagram?

• The energy difference between reactants and products

• The energy required to reach the transition state

• The total energy of the products

• The energy released during the reaction

What is the significance of the transition state in a reaction coordinate diagram?

• It is the point where reactants are converted to products

• It is the highest energy point along the reaction path

• It is the point where the reaction is at equilibrium

• It is the lowest energy point along the reaction path

Tags

NGSS.HS-PS1-4

How can a catalyst affect a reaction coordinate diagram?

• It raises the activation energy

• It lowers the activation energy

• It increases the energy of the products

• It decreases the energy of the reactants