3. Activation energy and energy diagrams in order for molecules to react th reac

Question

3. Activation energy and energy diagrams in order for molecules to react th reaction to occur. The potential energy barrier that the reacting is called the activation energy, and is denoted by the symbol Ea. energy to activated complex in which the bonds in the reactants elongate as the bonds in the products ey must come together with sufficient energy to cause a molecules must overcome Molecules with sufficient react that come together with the right orientation are envisioned to form an be gin to form. The activated complex is the transition state between the reactants and the products These energy changes are shown for a typical exothermic reaction in the reaction profile below, in which the potential energy of the reacting system is shown through all stages of the reaction. E (KJ) Ea reactants products Reaction Coordinate The 'energy of reaction' is the difference in energy between the products and the reactants and is given the symbol E. E Eproducts-Ereactants For this exothermic reaction, the energy of the products is lower than the energy of the reactants, and E is negative.

Explanation / Answer

Here reactant has more energy than product
So, activation energy is less of reactant

since reactant has more energy than product,
reaction is endothermic. So, sign of delta E is positive

Ea for forward reaction is 205
Ea for forward reaction is 205+70 = 275

none of the options are correct

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