CHEM 35 Chapter Notes - Chapter 3: Pi Bond, Electrophile, Halogenation
20 Aug 2016
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11. 4a: equilibrium and reaction rates, free energy = overall equilibrium between reactant and product, height of transition state = rate of reaction, equilibrium, relationship between free energy/ equilibrium a. i. Just because exothermic, doesn"t mean rapid or that even proceeds at all under normal conditions b. i. Example: if very high but still exergonic: when you see faster or rate problem barrier barrier, in c. i. Rate is determined by g double dagger = energy difference between starting material and transition state (not product: boltzmann distribution d. i. Molecules exist in range of energies; energies of most molecules cluster around average value d. ii. More energy in form of heat makes more molecules have sufficient energy to go over barrier d. iii. Reaction rate approx. doubles for every increase in temp of 10 degrees c: concentration e. i. First order reactions = rate depends on concentration of single reactant e. ii.
