Labeling Parts of a Reaction Coordinate Diagram

The video tutorial explains a reaction coordinate diagram, detailing the roles of reactants, transition states, and intermediates. It discusses the concept of activation energy, identifying rate limiting steps, and the significance of energy changes, particularly enthalpy, in chemical reactions.

What does the x-axis represent in a reaction coordinate diagram?

• Time

• Energy

• Temperature

• Reaction Coordinate

Which of the following is true about intermediates in a reaction?

• They are more stable than reactants.

• They can be easily isolated.

• They are more stable than transition states.

• They are less stable than transition states.

What is a characteristic of a transition state?

• It is a stable molecule.

• It can be isolated with the right tools.

• It is a condition where bonds are breaking and forming.

• It is the final state of the molecule.

How is the rate-limiting step determined in a reaction?

• By the number of intermediates.

• By the smallest activation energy.

• By the final product stability.

• By the largest activation energy.

What does the largest activation energy in a reaction indicate?

• The fastest step in the reaction.

• The most stable intermediate.

• The step that can be ignored.

• The rate-limiting step.

What does delta H represent in a reaction coordinate diagram?

• The change in pressure.

• The change in volume.

• The change in temperature.

• The change in enthalpy.

If the energy difference is given in Gibbs free energy, what is the change called?

• Delta T

• Delta S

• Delta G

• Delta H