TRACER DIFFUSION STUDIES IN THE SYSTEM PHOSPHORIC ACID-DISODIUM HYDROGEN PHOSPHATE-WATER BY A RADIOACTIVE METHOD

摘要

Interdiffusion measurements at 35℃ were made by the sliding cell method based on the radioactive tracer technique in the system phosphoric acid-disodium hydrogen phosphate-water at different concentrations. Phosphorous-32 as H_3, ~(32)PO_4 and also Na_2H ~(32)PO_4 was used as the tracer in these investigations. The results were compared with the diffusion coefficients in the phosphoric acid-water system and were explained from the point of view of existing theories of aqueous solutions in a qualitative way.