CHM135H1 Lecture Notes - Lecture 17: Partial Pressure, Inert Gas, Equilibrium Constant
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CHM135H1 Full Course Notes
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Chm135h1 f - lecture 17 - chapter 14 (2) Note that in kinetics unit, exponents in rate law are different than reaction coefficients, as rds determines rate law. In equilibrium unit, we can assume that coefficients are the same as the exponents in rate constant. For the general reaction aa + bb ! cc + dd. Q can be at any time, not necessarily at equilibrium. Q gives the ratio of product:reactant concentrations at any moment in the reaction. Varies with concentration - not constant (unlike k ) If beginning with 0 mol/l of n2o4 and 1 mol/l of no2, q increases at the beginning of the reaction, until it equals k, at which point it does not change anymore. Q < k: net reaction proceeds forward (products favored) Q > k: net reaction proceeds in reverse (reactants favored) Q = k: no net reaction - dynamic equilibrium. 2hbr (g) h2 (g) + br2 (g)
