A solution containing a mixture of 0.0424 M potassium chromate (K2CrO4) and 0.0590 M sodium oxalate (Na2C2O4) was titrated with a solution of barium chloride (BaCl2) for the purpose of separating CrO42â and C2O42â by precipitation with the Ba2 cation. Answer the following questions regarding this system. The solubility product constants (Ksp) for BaCrO4 and BaC2O4 are 2.10 Ã 10-10 and 1.30 Ã 10-6, respectively.â
A) Which barium salt will precipitate first? O BaC204 O BaCrO4 B) What concentration of Ba2+ must be present for BaCrO4 to begin precipitating? Number [Ba2+]= C) What concentration of Ba is required to reduce oxalate to 10% of its original concentration? Number 2+ D) What is the ratio of oxalate to chromate (IC204CrO4) when the Ba2 concentration is 0.0050 M? Number C,O Cro,
