# Question #ca849

One $K C l$ molecule dissociates into ${K}^{+}$ and $C {l}^{-}$. Thus, it provides with 2 charge carrier ions per molecule that dissocates.
However, for $A l C {l}_{3}$ which dissociates into one $A {l}^{+ 3}$ and three $C {l}^{-}$ ions, i.e. one $A l C {l}_{3}$ molecule provides with 4 charge carrier ions per molecule which dissociates.
Thus for a given molar concentration (and physical conditions) for $K C l$ and $A l C {l}_{3}$, the latter conducts electricity better than the former and thus, has greater conductivity.