A 0.83 mol of PCl5 is placed in a 1.0 L container and allowed to reach equilibrium at a given temperature. Equillibrium constant, Kc equals 0.44, what would be thee equilbrium concentration of Cl2 in the container? Show your work. PCl5(g)  PCl3(g) + Cl2(g)

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A: Concentration of NH3 = 0.40 M  Kb = 1.8 × 10-5 M  pH of NH3 solution = ?   

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