Chemistry / Selective Precipitation
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Solution: A solution contains 0.20 M CrO 4 2- , 0.10 M CO 3 2- , and 0...

Question

A solution contains 0.20 M CrO 4 2- , 0.10 M CO 3 2- , and 0.010 M Cl - . If solid AgNO3 is added slowly to the solution without changing the total volume of the solution, in what order will the precipitates, Ag2CrO4, Ag2CO3, and AgCl, form?

a. 1st: Ag2CO3        2nd: Ag 2CrO4         3rd: AgCl

b. 1st: Ag2CrO4       2nd: Ag 2CO3          3rd: AgCl

c. 1st: AgCl              2nd: Ag 2CrO4         3rd: Ag 2CO3

d. 1st: AgCl              2nd: Ag  2CO3          3rd: Ag 2CrO4

e. 1st: Ag2CO3        2nd: AgCl               3rd: Ag  2CrO4