CHEM 4701 Lecture Notes - Lecture 16: Tral

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25 Dec 2014
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~every 10 degrees you increase t, rxn rate doubles but can be more precise about this w/ kinetic eqns. Limited in its use (strictly speaking, only for gas phase. But can use to determine activation energy (ea) A = frequency factor, empirical (derived from expts) needs to collide productively (collision and sterics) 1010 - 1014 s-1 --> these collisins occur frequently y int = ln(a) ln(k) slope = -ea/r. Determine enthalpy and entropy contributions to the activation energy. Derive mechanistic info looking at energy difference btwn reactant and transition state (is it enthalpic or entropic) Don"t just go from reactant to product, have transition state whose lifetime is less than 1 vibration. Inorganic chemistry page 1 substitute for this term. Statistical mechanics derivationlook online if vibration goes wrong (turns into translation), then you get something new (product if vibration stays vibration, then go back to reactant.