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Unformatted text preview: K c (DB) [C] c [A] a [D] d [C] c [D] d [B] b aA cC bB dD K c (AC) K c (DB) K c (CD) ? Gas Phase Equilibria Can use partial pressures P A V = n A RT aA(g) bB(g) Kc = [B] b [A] a (n B /V) b (n A /V) a P B b P A a (RT) ab = (RT) ab K p = = Heterogeneous Equilibria Different phases pure phase is constant Recall demonstration HgCl 2 (s) Hg 2+ (aq) + 2Cl-(aq) K c = [Hg 2+ ][Cl ] 2 Example Given that K c for the dissociation of bromine chloride is 377 at 300 K and that the equilibrium partial pressures of bromine and chlorine are P Br = .32 atm and P Cl = .71 atm find the partial pressure of BrCl(g)....
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