# Question #75aa6

Sulfur dioxide, or $S {O}_{2}$, will react with oxygen gas, or ${O}_{2}$, to form sulfur trioxide, or $S {O}_{3}$, according to the balanced chemical equation
$2 S {O}_{2 \left(g\right)} + {O}_{2 \left(g\right)} \to 2 S {O}_{3 \left(g\right)}$