4' 1.0cm3 0.25 mol dm 3 potassium chromate(VI), K,Cro, is added as an indicator. At the end-point, all the silver chloride has been precipitated in the 52.5 cm solution. A slight excess of silver idis causes a red-brown precipitate of silver chromate(VI) to form. 2Ag*(aq) + Cro,2-(aq)→ Ag,Cro,(s) (i) The solubility product of silver chloride is: = 2.0 x 10 10 mol? dm-6 KSP Use this value to explain why [Ag*] = 1.41 x 10 mol dm-3 at the end-point.
4' 1.0cm3 0.25 mol dm 3 potassium chromate(VI), K,Cro, is added as an indicator. At the end-point, all the silver chloride has been precipitated in the 52.5 cm solution. A slight excess of silver idis causes a red-brown precipitate of silver chromate(VI) to form. 2Ag*(aq) + Cro,2-(aq)→ Ag,Cro,(s) (i) The solubility product of silver chloride is: = 2.0 x 10 10 mol? dm-6 KSP Use this value to explain why [Ag*] = 1.41 x 10 mol dm-3 at the end-point.
Chapter9: Aqueous Solutions And Chemical Equilibria
Section: Chapter Questions
Problem 9.8QAP
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