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10 Cards in this Set
- Front
- Back
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first order linear graph
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ln(c) vs t
linear, slope = -k |
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second order linear graph
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1/c vs t
slope = k |
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check what order a reaction is
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ln(-rate) vs ln(c)
slope = order |
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formula for rate law of C2F4 to C4F8
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2C2F4 -> C4F8
(1/2)rate = kc^2 |
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principle of detailed balance
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ratio of forward to reverse rate constants = equilibrium constant for reaction
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reaction mechanisms
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-rate may be determine by elementary steps (which ones in equilib, fast, slow)
-cannot prove correct reaction mechanism |
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Lindemann Mechamisn
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-unimolecular decomposition of H2CO
1. H2CO + M <-> H2CO* + M 2. H2CO* -> H2 + CO where M is a molecule H2CO collides with, H2CO* is activated molecule rate law governing [H2CO] depends on [H2CO*], which is assumed to be constant rate varies with pressure high pressure = dependence on [H2CO] low pressure = dependence on [M], which goes to zero |
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chain reaction
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self sustaining
initiation branching propagation termination? |
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autocatalysis
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-product is one of the reactants
ex: A + B -> 2B -sigmodal dependence of [B]: induction period, reaction occurs fast, reaction slows down (approaches zero) |
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Lotka Mechanism
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-oscillating reactions
-first part of reaction is autocatalytic |
