# Write a balanced equation for aluminum and sulfur reacting to produce aluminum sulfide.

## Question:

Write a balanced equation for aluminum and sulfur reacting to produce aluminum sulfide.

## Balancing Chemical Equations

Chemical equations must be balanced so that they follow the Law of Conservation of Mass, which simply states that matter can neither be created nor destroyed. For mass to be conserved in a chemical reaction, the total mass of the reactants must be equal to the total mass of the products. In other words, the number of atoms of each element must be equal on both sides of a chemical equation.

## Answer and Explanation:

Aluminum sulfide has the molecular formula, Al{eq}_2 {/eq}S{eq}_3 {/eq}. Therefore, the balanced chemical equation for the formation of this compound from Al{eq}^{3+} {/eq} and S{eq}^{2-} {/eq} is

{eq}\mathbf{2Al^{3+}(aq) + 3S^{2-}(aq) \rightarrow Al_2S_3(s)} {/eq}