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Worksheet 37 . Topic 9

Set D: Drawing potential energy diagrams Objective: To test your ability to draw potential
energy diagram from information and
equation given about a reaction

Drawing Based on Equation:
On the axis given, draw potential energy diagram to represent the reaction given by each equation

26. 2C(s) + 2H2(g) + Energy ------- > C2H4 (g) 27. 2 C(s) + 3H2 (g) -------- > C2H6 + Heat

Potential energy (KJ)
Potential energy (KJ)
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Reaction coordinate
Reaction coordinate

Drawing based on information from Reference Table I

28. On the set of axis below, draw potential energy 29. On the set of axis below, draw potential
energy diagram for the formation of
diagram for the formation of NH3(g) from its
elements. HI(g) from its elements

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Potential energy
Potential energy (KJ) Need help? Study Book Pg 202 - 204 Set 23 - 26
(KJ)

Reaction coordinate Reaction coordinate

Drawing based on equation and activation energy.
Label the axis with appropriate potential energy values, and then draw a curve to represent the reaction.
30. CD + 50 KJ ------- > C + D . 31. X + W ------- > Z + 30 KJ.
The activation energy for this reaction is 80 KJ. The activation energy for this reaction is 20 KJ.

Potential energy (KJ) Potential energy (KJ)

Reaction coordinate Reaction coordinate
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