Ch9 worksheet kiinetics

# Ch9 worksheet kiinetics - CH101/Ison Ch9 Worksheet Name...

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CH101/Ison Ch9 Worksheet Name: __________, __________ Kinetics and equilibrium I. Activation energy (E a ): Activation energy (E a ) is the energy need to initiate a reaction. Transition state: The species present at the energy maximum Activation energy (E a ): Energy required to form the transition state CH 3 I + OH 1- I 1- + CH 3 OH II. Reaction rates: -Molecules/ions must collide in order to react. -The rate of the reaction depends on: a) frequency of collisions (increases with ↑[reactants] and ↑T) b) the fraction of successful collisions (increases with ↑T) c) the activation energy (E a ) (unique to each reaction pathway) Practice problem 1. How can we increase the rate (speed) of a reaction? ______________ III. Rate Law: -Mathematical expression that describes the rate of reaction -For a one step process the rate law is as follows: 2NOCl(g) 2NO(g) + Cl2(g) Rate f = k f [NOCl] 2 Rate of the forward reaction Rate constant of the forward reaction Concentration of reactant -Pure liquids and solids do not appear in the rate law -The rate constant (k) is a function of E a and T, so k increases with temperature.

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