To help you understand how to interpret potential energy diagrams. The graphs sh

Question

To help you understand how to interpret potential energy diagrams. The graphs shown here are called potential energy diagrams. They show the potential energy of a system as it changes from reactants to products. The first graph shows the uncatalyzed reaction (Figure 1); the second graph shows the catalyzed reaction (Figure 2). The activation energy of a reaction is the difference in difference in energy between the reactants and the activated complex Activation energy is always a positive number.

Explanation / Answer

Solution :-

The activation energy is the difference between the transition state and the reactant energy

The transition state energy is 400 kJ

and reactant energy is 225 kJ

Therefore Activation energy = 400 kJ - 225 kJ

                                        = 175 kJ

Therefore the activation energy of the uncatalyzed reaction is 175 kJ

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