Answer to Question #193533 in General Chemistry for Jonas Rader

Question #193533

 Draw an energy diagram for a reaction that starts with reactions whose energy is 20.0

kJ and has a ΔH of 20.0 kJ. The activation energy for the reaction is 35.0 kJ

Expert's answer

Let make two coordinate in which horizontal one represent the Reaction coordinate and the vertical one represent the Energy (KJ)

Mark 0,10,20,30,40,50,60 on the vertical coordinate

Now draw a horizontal line at 0 KJ for the product.(Named as Product)

As the reaction starts from 20 KJ so draw a horizontal line at 20 KJ .(Named as Reactants)

As activation energy is 35 KJ SO make horizontal line 35 KJ above the Reactant line i.e draw a horizontal line at 55 KJ. (Named as Transition state.)

Now the difference between reactant and product line is "\\Delta H_r=20 kJ"

And difference between reactant and transition state is "\\Delta E_{act}=35kJ" .

This will really help you to draw the graph easily.

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