CAS CH 110 Lecture Notes - Lecture 32: Rate Equation, Adsorption, Ethylene
25 Apr 2017
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Document Summary
Ea , activation energy relationship to k and k. Ea is the is the minimum kinetic energy to activate a successful collision. For endothermic reactions, since ea forward is large, it is sensitive to increases in temperature. Raising the temperature will increase k, the equilibrium constant, exactly what le chatelier"s principle predicts. Ea large forward, rate increase is obvious with increasing temperature. Ea large for reverse reaction, rate increase is not obvious with increasing temperature. P is always less than 1, because it reduces the collision probability. The more complex the molecule the lower p is. In laboratory experiments, molecules are streamed in the same direction at the same speed, called a molecular beam. Beams are pointed at gaseous clouds of atoms or pointed directly at other beams. It was found when streaming a beam of cl atoms at hi molecules that cone of half-angle 30 produced the most product.
