Determination of SO42- ions by conductimetric titration
- Sample 50 mL of the water to be analyzed and transfer to a 500 mL beaker.
- Add 200 mL of distilled water.
- Place the conductimetric cell in the solution.
- Dose with a barium chloride solution at 0.05 mol/L.
- The conductivity σ is determined from the volume of barium chloride solution added.
A conductivity cell consists of two platinised platinum plates (platinum coated with finely divided platinum black particles) facing each other (distanced by length l) and of surface area S. Platinised platinum is used in order to optimize the contact between the two plates and the solution to be analyzed.