Question
A solution contains 0.1M Cl− and 0.001M CrO2−4. If solid AgNO3 is gradually added to this solution, which will precipitate first, AgCl or Ag2CrO4? Assume that the addition causes no change in volume. Given
KspAgCl=1.7×10−10M2
KspAg2CrO4=1.79×10−12M3
What percent of Cl− remains in the solution when CrO2−4 starts precipitating?