Chemistry Practice Problems Catalyst Practice Problems Solution: Consider the Potential Energy vs. Reaction Coordin...

Solution: Consider the Potential Energy vs. Reaction Coordinate diagram shown to the right. For each of the following questions, circle the best answer.If a catalyst is added, i) Ea will decrease for the forward reaction but increase for the back reactionii) Ea will increase for both the forward and back reactions iii) Ea will decrease for both the forward and back reactionsiv) there is no change in Ea

Problem

Consider the Potential Energy vs. Reaction Coordinate diagram shown to the right. For each of the following questions, circle the best answer.

If a catalyst is added, 

i) Ea will decrease for the forward reaction but increase for the back reaction

ii) Ea will increase for both the forward and back reactions 

iii) Ea will decrease for both the forward and back reactions

iv) there is no change in Ea

Solution

For this problem, we have to determine which among the statement is true when a catalyst is added

  • Recall that in energy diagrams, catalysts are reagents that lower the activation energy or Ea of the reaction
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