Chemical and Ionic Equilibrium - Result Question 114

####58. A sample of AgCl was treated with 5.00mL of 1.5M Na2CO3 solution to give Ag2CO3. The remaining solution contained 0.0026g of Clions per litre. Calculate the solubility product of AgCl. [Ksp(Ag2CO3)=8.2×1012]

(1997,5M)

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Solution:

  1. 2AgCl(s)+CO32Ag2CO3(s)+2Cl

K=[Cl]2[CO32]=[Cl]2[CO32]×[Ag+]2[Ag+]2=[Ksp (AgCl)]2Ksp (Ag2CO3) [Cl]=0.002635.5M=7.3×105M

The above concentration of Clindicates that [CO32] remains almost unchanged.

7.3×1051.5=[Ksp (AgCl)]28.2×1012 Ksp (AgCl)=2×108



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