Concentration of k2cr207

In standardization of sodium thiosulphate what is the concentration of potassium dichromate.

Both k2Cr2O7 and sodium thiosulphate have same concentration, where K2Cr2O7 act as a primary standard solution. Primary standard means solution whose concentration does not change with time and environmental conditions like temperature, pressure. While sodium thiosulphate act as a secondary standard solution, and it’s standardization is necessary before used for titration. So, both K2Cr2O7 and sodium thiosulphate are of conc. Of 0.025N.

This topic was automatically closed 10 days after the last reply. New replies are no longer allowed.