Write the reaction equations for the following transitions: S – SO2 – SO3 – H2SO4 – BaSO4

Let’s write down the reaction equations for the following transitions: sulfur to sulfur oxide SO2 to sulfur oxide SO3 and to H2SO4 and to BaSO4.

We start by writing the equation for the reaction of sulfur with oxygen and get:

1) S + O2 = SO2.

The following reaction equation is the interaction of the resulting substance from the first reaction equation with oxygen.

2) SO2 + O2 = SO3.

Let’s equalize the resulting reaction equation in both parts:

2SO2 + 2O2 = 2SO3.

The following reaction equation, the resulting substance from the previous one plus water:

3) SO3 + H2O = H2SO4.