# What is total IONIC concentration in a solution of MgCl_2(aq) at 0.25*mol*L^-1 concentration?

Oct 3, 2016

The total concentration of ions from the solute is $0.75 \cdot m o l \cdot {L}^{-} 1$.

#### Explanation:

In aqeous solution, magnesium chloride ionizes according to the following equation:

$M g C {l}_{2} \left(s\right) \rightarrow M {g}^{2 +} + 2 C {l}^{-}$

Thus three equiv of ion result for each equiv of magnesium chloride: $1 \times M {g}^{2 +} + 2 \times C {l}^{-}$

So if the concentation of $M g C {l}_{2} \left(a q\right) = 0.25 \cdot m o l \cdot {L}^{-} 1$, then $\left[M {g}^{2 +}\right] = 0.25 \cdot m o l \cdot {L}^{-} 1$, and $\left[C {l}^{-}\right] = 0.50 \cdot m o l \cdot {L}^{-} 1$.

Capisce?