137. Solving a chemistry problem

137. Solving a chemistry problem

Through a column filled with a mass of 10 g, 250.0 ml of 0.08 M copper sulfate was passed. The 50.0 ml portions of the solution leaving the column were titrated with 0.1 N. sodium thiosulfate solution (feq = 1) and the following results were obtained:
Portion of solution 1 2 3 4 5
Thiosulfate consumption for titration 0 12.0 25.0 39.2 39.2
Calculate the dynamic capacity of the cation exchanger for copper (mmol / g; the molar mass of the equivalence factor is ½ M).