• # question_answer When is a precipitate formed when solutions of $BaC{{l}_{2}}$ and $N{{a}_{2}}S{{O}_{4}}$ are mixed?

A precipitate is formed when in the final solution after mixing, the ionic product $[B{{a}^{2+}}]\,[SO_{4}^{2-}]\,>{{K}_{sp}}$ for $BaS{{O}_{4}}$.