Potential Energy Diagrams

Is the following reaction endothermic or exothermic?

• Endothermic

• Exothermic

Is the following reaction endothermic or exothermic?

• Endothermic

• Exothermic

Interval B represents:

• Heat of Reaction

• Activation Energy

• PE of Reactants

• Activated Complex

Which interval represents the potential energy of the products?

• A

• B

• C

• D

How much energy (in kJ) do the reactants have?

• 50 kJ

• 250 kJ

• 100 kJ

• 200 kJ

Which interval represents ΔH?

• A

• B

• C

• D

What does letter C represent?

• Activated complex

• Activation energy of forward reaction

• Activation energy of reverse reaction

• Heat of reaction

Which letter represents the activation energy for the forward reaction?

• A

• B

• C

• D

Which letter represents the heat of reaction?

• A

• B

• C

• D

Calculate the heat of reaction for the following...

• 20 kJ

• -20 kJ

• 40 kJ

• 100 kJ