Describe what happens as potassium chromate, K₂CrO₄, is slowly added to a solution containing 0.20 M AgNO₃ and 0.20 M Ba(NO₃)₂. 

K_SP for Ag₂CrO₄ is 1.1×10^–12 , K_SP of BaCrO₄ is 1.2×10^–10.