Question

A mixture of BaCl₂ and Na₂CO₃ in to be analyzed for its barium chloride content by the Volhard method. The following data are given. The AgNO₃ threat solution is prepared by dissolving 4.933 g of silver metal of 99.10% purity in nitric acid and diluting with water to exactly 500 ml in a volumetric flask. In the standardization of the KSCN solution, it is found that a volume of 25.00 ml of the AgNO₃ solution requires 22.00 ml of the KSCN solution. A 0.5000 g sample is dissolved, acidified, and a volume of 40.30 ml of AgNO₃ solution is added: the excess of silver is then back-titrated, requiring 6.22 ml of the KSCN solution.

(a) Calculate the normality of the silver (107.87) solution.

(b) Calculate the normality of KSCN solution.