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Chemistry
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11 Nov 2019

Match the terms for this potential energy diagram for an exothermic reaction to the numbers.

Forward Activation energy

Reverse Activation energy

Reactants

Products

With Catalyst

Heat of Reaction

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Jarrod Robel
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16 Oct 2019

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Related questions

For a onestep reaction, the activation energy for the forward reaction is40.0 kJ mol-1, and the enthalpy ofreaction is -20.0 kJ mol-1. Which statement belowis true?


The value for the enthalpy of reaction would be decreased byaddition of a catalyst.
The reaction is endothermic.
The activation energy of the forward reaction would be affected toa greater extent than the activation energy of the reverse reactionby addition of a catalyst.
The reverse reaction has a higher activation energy than theforward reaction.
The reaction rate would be decreased by an increase intemperature.

23.
Draw a potential energy versus reaction coordinate diagram for areaction which occurs by a three-step mechanism where the secondstep is the rate-determining step for the forward reaction. On yourdiagram, indicate:
i. The energy of the reactants and of the products. ii. Theenthalpy change for the reaction.
iii. The activation energy for the forward and reverse direction ofeach step.
(a)For the diagram you drew in Part a, justify why the second stepyou show in your diagram is the rate-determining step for theforward reaction.
(b)For the diagram you drew in Part a, is the overall reactionendothermic, exothermic, neither, or cannot be determined? Justifyyour choice.
(c)Redraw you diagram from Part a and clearly on the diagram showthe effect of adding a catalyst which increases the reaction rate.


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