SO₃

Definition

SO₃ refers to sulfur trioxide, which is an oxide compound composed of one sulfur atom bonded to three oxygen atoms. It is a reactant in the given equation.

Related terms

Oxide: A compound composed of oxygen combined with another element.

Reactant: A substance that undergoes chemical changes in a reaction to form new substances.

Stoichiometry:

The calculation of quantities involved in chemical reactions based on balanced equations.