Quantitative analysis of Cl⁻ ion is often performed by atitration with silver nitrate, using sodium chromate as an indica-tor. As standardized AgNO₃ is added, both white AgCl and red Ag₂CrO₄ precipitate, but so long as some Cl⁻ remains, the Ag₂CrO₄ redissolves as the mixture is stirred. When the redcolor is permanent, the equivalence point has been reached.(a) Calculate the equilibrium constant for the reaction 2AgCl(s)+CrO₄²⁻(aq)⇌Ag₂CrO₄(s)+2Cl⁻(aq) (b) Explain why the silver chromate redissolves.(c) If 25.00 cm³ of 0.1000 M NaCl is mixed with 25.00 cm³ of 0.1000 M AgNO₃, what is the concentration of Ag⁺ remaining insolution? Is this sufficient to precipitate any silver chromate?

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Chapter17: Solubility And Complex-ion Equilibria
Section: Chapter Questions
Problem 17.103QP: Although silver chloride is insoluble in water, it readily dissolves upon the addition of ammonia....
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Quantitative analysis of Cl⁻ ion is often performed by atitration with silver nitrate, using sodium chromate as an indica-tor. As standardized AgNO₃ is added, both white AgCl and red Ag₂CrO₄ precipitate, but so long as some Cl⁻ remains, the Ag₂CrO₄ redissolves as the mixture is stirred. When the redcolor is permanent, the equivalence point has been reached.(a) Calculate the equilibrium constant for the reaction 2AgCl(s)+CrO₄²⁻(aq)⇌Ag₂CrO₄(s)+2Cl⁻(aq) (b) Explain why the silver chromate redissolves.(c) If 25.00 cm³ of 0.1000 M NaCl is mixed with 25.00 cm³ of 0.1000 M AgNO₃, what is the concentration of Ag⁺ remaining insolution? Is this sufficient to precipitate any silver chromate?

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