Question

a) Read the graphs is energy absorbed or release as a reaction progresses from the reactants to the activation complex?b) compare how are the graphs for the reactions 1 and 2 different?

Answer 1

The graphs of energy absorbed or released as a reaction progresses can be analyzed using activation energy and enthalpy change. In exothermic reactions, energy is released. The comparison of graphs can be done by comparing activation energies and enthalpy changes.

Step-by-step explanation:

The graphs of energy absorbed or released as a reaction progresses from the reactants to the activation complex can be analyzed in terms of the reaction's activation energy (Ea) and the enthalpy change (AH). The activation energy represents the energy barrier that the reactant molecules must overcome to reach the activated complex, while the enthalpy change represents the overall energy change from reactants to products. In a exothermic reaction, the reactants have higher energy than the products, so energy is released as the reaction progresses.

When comparing the graphs for two different reactions, we can look at the differences in their activation energies and enthalpy changes. Reactions with a higher activation energy require more energy for the reactants to overcome the energy barrier and proceed to the activated complex. Reactions with a larger negative enthalpy change have a greater overall energy release.

Answer 2

A) The graph that shows energy changes in reaction 2 is showing an endothermic reaction. This graph shows that the reaction is absorbing energy. On the other hand, the graph that shows the energy changes in reaction 1 is showing an exothermic reaction meaning energy is being released.

B) The graph for reaction 2 shows that the reactants are lower than the products whilst on reaction 1 the reactants are higher than the products. For reaction 2 the activation energy is greater than that of reaction 1.