Question

3. Use the potential energy diagram to help you answer the questions below. Make sure to show ALL work for calculations and provide an explanation when directed for full credit. What is the activation energy of this reaction? Show your work ! b. What is the total change in enthalpy of this reaction? Show your work! . Is the slope positive or negative? d. Is this an endothermic or exothermic reaction? Explain.

Answer 1

The potential energy diagram is a common way of depicting the reaction profile. The following are true about the diagram;

• The activation energy of the reaction is 35kJ.
• The enthalpy change of this reaction is 25kJ.
• The slope of the diagram is positive.
• The reaction is endothermic.

What is a potential energy diagram?

A potential energy diagram is a diagram that shows the conversion of reactants to products. It can tell us whether the reaction is endothermic or exothermic.

1) From the diagram, the activation energy of the reaction = 65 kJ - 30 kJ = 35 kJ

2) The enthalpy change of this reaction = 55kJ - 30 kJ = 25kJ.

3) The slope of the diagram is positive.

4) The reaction is endothermic.

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