Reaction Coordinate Diagrams

What name is given to the minimum amount of energy needed by particles for them to react when they collide?

• Activation energy

• Catalytic energy

• Threshold energy

If the forward reaction is endothermic, what can be deduced about the reverse reaction?

• It is also endothermic

• There is no energy change

• It is exothermic

Tags

NGSS.HS-PS1-4

The reaction between nitrogen and oxygen can be represented by the following equation:

Which of the following energy level diagrams represent the above reaction?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-4

Which energy diagram line represents the catalyzed reaction?

• The black line

• The red line

• It can not be determined

Tags

NGSS.HS-PS1-4

A represents

• Potential Energy of Products

• Potential Energy of Reactants

• Change in Enthalpy

• Activation Energy

Tags

NGSS.HS-PS1-4

B represents

• Potential Energy of Products

• Potential Energy of Reactants

• Change in Enthalpy

• Activation Energy

Tags

NGSS.HS-PS1-4

Energy level diagram for endothermic reaction

• •The energy of the products is higher than the energy of the reactants.

• •The energy of the products is lower than the energy of the reactants.

Tags

NGSS.HS-PS1-4

What does the peak of the curve in an endothermic potential energy diagram represent?

• The lowest energy state of the reactants

• The activation energy needed for the reaction

• The total energy released by the reaction

• The final energy state of the products

Tags

NGSS.HS-PS1-4

Which diagram typically shows a higher initial energy state before the peak?

• Endothermic

• Exothermic

• Both show the same initial energy state

• Neither diagram shows energy states

Tags

NGSS.HS-PS1-4

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

• The change in temperature over time

• The progress of the reaction and energy changes

• The concentration of reactants and products

• The rate of reaction

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1