Which one of the following has the highest molar conductivity?
Which one of the following has the highest molar conductivity?
Diammine dichloroplatinum (II)
Tetraamminedichlorocobalt (III) chloride
Potasșium hexacyano ferrate (II)
Hexa aquo chromium (III) chloride
Solution
Highest molar conductivity (for equimolar solutions) will be exhibited by the complex that will dissociate into a greater number of ions in the solution.
$\begin{aligned} & {\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right]=0} \\ & {\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right] \mathrm{Cl}=2} \\ & \mathrm{~K}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]=5 \\ & {\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3=4}\end{aligned}$
Thus, potassium hexacyano ferrate (II) will have the highest molar conductivity.