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SCAN0025 - l 1 molar Conwrtrohou The Equilibrium Constant...

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Unformatted text preview: l: 1, molar Conwrtrohou The Equilibrium Constant for a Reaction aA + bB ZCC + dD K is a natural characteristic of c d theqreaction and is CONSTANT K _ [C ] [D ] at a given set of conditions ~Standard state conditions are [ A ]a [ B ] b '1 M solute -1 bar pressure 'PUI‘E substance -298 K - K3 is determined b the natural balance of reactant and product coficentrau‘ons AT QUILlBRlUM - [solutes] are In M - [gasses] are in bars - [pure substances} are 1i aft 2: b B b to = :51 _ q a ICLq Un vi (135 El" 3 [5] act. Remember that strictly sgeaking, the ratio of £3] 3 amatd Stat 1 the substance’s actual state to its standard __—_—__ state is what is in the Ksq equation R l \V‘ 3‘1 } l atm gas I ”\i i‘ =[C]“[D]d L ‘C‘ C M “if btér—fl- K .— [A]“[B]b Where: [C] = {[Cact1/[Cstd]} What are the units of K“? * 'Z Chlozj Lal0f2=» Rowers fiattcznd ShiiH to h‘gh—t What does Keq tell us? ————_—_— aA+ bB icC+dD manta-m5 qavcem ehtH +6 LL’H Smaller OK (109,3 Not happen: - If Keq is very large? ' If Keq is very small? - If KSq is large, what is Keq for the reverse n on): ‘06 \ reaction? - If Keq is large. how fast will the reaction {-le 5‘ «18*? Can‘t 4L“ proceed? - Keq tells the tendency of a reaction to occur K. = [0-30 v.59 A 15l- H mus) <~’v-l 2 +2Cl‘ %2 ‘a 30 Proud (ICVWald lCLq «ens-Wu— Ultra-t- a? 62m new rYth toting krmad ...
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