# How do you balance Fe + Cl_2 -> FeCl_3?

Mar 11, 2016

You balance it stoichiometrically. Garbage in equals garbage out.

#### Explanation:

$F e \left(s\right) + \frac{3}{2} C {l}_{2} \left(g\right) \rightarrow F e C {l}_{3} \left(s\right)$

If you don't like the non-integral stoichiometric coefficient, you are free to double the entire equation:

$2 F e \left(s\right) + 3 C {l}_{2} \left(g\right) \rightarrow 2 F e C {l}_{3} \left(s\right)$

Both equations are PRECISELY the same. They represent the same mass transfer. The first equation may be a little easier to use if you had to work the quantities of gas required for iron oxidation.