O arrhenius equation gives the dependence of k on t

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Unformatted text preview: of ln k vs 1/T with a negative slope. Slope of the line = - Ea/R. Thus Ea can be determined; T must be in Kelvin, not °C. o Arrhenius Equation gives the dependence of k on T (equation given in the Data Ea − RT booklet): k = A e : ln k = ln A − o Ea ⎛ 1 ⎞ ⎜⎟ R ⎝T ⎠ OR log10 k = log10 A − Ea ⎛ 1 ⎞ ⎜ ⎟ where: A, the 2.303 R ⎝ T ⎠ Arrhenius constant is the collision factor that represents the frequency of successful collisions with the favourable geometry, R is the Ideal Gas Constant (= 8.314 J mol-1 K1 ), Ea is the activation energy (the minimum energy required for a reaction to occur), and T must be in Kelvin scale. • Molecularity is based on proposed mechanism and refers to the number of particles in the slow, rate-determining step (i.e., the number of species involved in making the transition sta...
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This note was uploaded on 09/23/2010 for the course CS 001 taught by Professor Jix during the Spring '10 term at Riverside Community College.

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