What is the value of the activation energy?

What is the value of the activation energy?

• Answer:

  On One Hand: Activation Energy Is a ConstantReaction energy profiles typically show a curve with one (or more) peaks. The peak is an activation energy--the energy required for the reaction to proceed. Note that each peak has a set value. Since atomic building blocks (electron charge and mass, etc.) do not change, activation energy is constant for a given reaction. Activation energy varies between different reactions.On the Other: It is a VariableActivation energy can vary under extreme conditions. For example, a reaction may proceed very differently at temperatures near Absolute Zero (the coldest possible temperature) since quantum effects that are "drowned out" in warmer conditions become relevant.Bottom LineActivation energy can be treated as a constant for a given reaction. Though a large change at extreme conditions implies a small change in moderate conditions, the difference in activation energy caused by quantum physics subtleties has no effect on measurable results. Just as relativity is "there" when we drive at different speeds, we don't notice our clocks slowing down accordingly. In both cases, the change is incredibly tiny.Source:https://chemistry.twu.edu/tutorial/ActivationEnergySum.htmlhttp://www.sciencedaily.com/releases/2010/02/100211141130.htm?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+sciencedaily+(ScienceDaily%3A+Latest+Science+News)On One Hand: On the Other: Bottom Line