CBSE Class 12-science Answered

• The measurement of molar conductances (Lm) of solutions of coordination compounds helps to estimate the number of the ions furnishes by the compound in solution.
• By comparing the molar conductance of the compound with those of known electrolytes, it was able to predict the number of ions present in the solution.

          For example:

          It has been observed that the complex CoCl₃.6NH₃ behaved as 1:3 electrolyte, CoCl₃.5NH₃ as 1:2 electrolyte, CoCl₃.4NH₃ as 1:1 electrolyte.

          The coordination compound CoCl₃.3NH₃ behaved as molecular (non-electrolyte).