# How can I deduce the balance equation for magnesium sulphide using half equation method(ion-electron method)???

Jun 12, 2017

#### Answer:

Do you refer to "steel-making..........."??

#### Explanation:

Sulfur is removed from pig iron by the following reaction with magnesium..........

$M g \left(l\right) + \frac{1}{8} {S}_{8} \left(s\right) \rightarrow M g S \left(s\right)$

I am told that the powdery magnesium sulfide floats atop of the liquid steel, and is then removed from the blast furnace.

If I wanted to represent this by means of half equations, I would separate the individual redox equations......

$\text{Oxidation (i):}$ $M g \rightarrow M {g}^{2 +} \rightarrow 2 {e}^{-}$

$\text{Reduction (ii):}$ $S + 2 {e}^{-} \rightarrow {S}^{2 -}$

$\text{Overall (i) + (ii):}$ $M g \left(s\right) + S \left(s\right) \rightarrow M g S \left(s\right)$