# What is the difference in conductivity between the 0.001 M sodium chloride and the 0.001 M ferric chloride?

May 19, 2016

The conductivity of a solution increases with the increase of concentration of ions in it.

#### Explanation:

The conductivity of a solution increases with the increase of concentration of ions in it.

In the case of a $0.001 M$ sodium chloride $N a C l$ solution, the concentrations of ions are:

$\left[N {a}^{+}\right] = 0.001 M$
$\left[C {l}^{-}\right] = 0.001 M$

However, for the $0.001 M$ solution of ferric chloride $F e C {l}_{3}$, the concentrations of ions are:

$\left[F {e}^{3 +}\right] = 0.001 M$
$\left[C {l}^{-}\right] = 0.003 M$

Therefore, there are more ions in the solution of ferric chloride than that of sodium chloride, and thus the conductivity of the ferric chloride solution will be higher.