How to prove that sodium chloride is part of table salt? What reactions can be used to confirm

How to prove that sodium chloride is part of table salt? What reactions can be used to confirm or deny the sulfate content in it. Write down the equation.

You can check by electrical dissociation, or you can also chemical reactions with acids / salts, and then check the property of the resulting salt, for example: NaCl + Li2S -> LiCl + Na2S. Na2S is a yellowish salt. So we proved that there is sodium. Now about sulfates: Ba (OH) 2 + Na2SO4 (this is relative to any sulfates, I just gave an example on it) -> 2NaOH + BaSO4 ↓ (precipitated, that is, in the presence of sulfates, this salt will precipitate).