How would you balance this chemical equation: #2Sb + I_2 -> 2SbI_3#?
There are six Iodines in the products so there must be six iodines in the reactants.
Iodine comes as diatomic gas molecule. ( as well as a grey crystal).
You follow a systematic procedure to balance the equation.
Start with the unbalanced equation:
A method that often works is to balance everything other than
Another useful procedure is to start with what looks like the most complicated formula.
The most complicated formula looks like
We have fixed
Every formula now has a fixed coefficient. We should have a balanced equation.
All atoms balance. The balanced equation is