Carry out the chain of transformations: Na2S → S → SO2 → SO3 → H2SO4 → BaSO4

Let’s perform a chain of transformations of inorganic compounds.

1. Na 2S + 2H20 = 2NaOH + S + H2 (electrolysis reactions)

2.S + O2 = SO2

3.2SO2 + O2 = 2SO3

4.SO3 + H20 = H2SO4

5.H2SO4 + BaCI2 = BaSO4 2HCI

The theory of electrolytic dissociation says that reactions in solutions occur with the participation of electrolyte ions and go to the end in the case of the formation of low-dissociating substances.

Let’s write down the ions of the equation.

2H ^ + + SO4 ^ 2- + Ba ^ 2 + + 2CI = BaSO4 + 2H ^ + 2CI

In short:

SO4 ^ 2- + Ba ^ 2 + = BaSO4 (white precipitate).