Test for Sulphate Ions goes like...?

-First add Barium Chloride to the Solution you want to Decipher -If Sulphate Ions are Present, then a White Precipitate of Barium Sulphate will be Present -Then add Dilute Hydrochloric Acid to it -What will happen next, will be Nothing, because Barium Sulphate will Not React with the Hydrochloric Acid, so the White Precipitate will not Vanish -[This simply means you have Sulphate Ions, and not Carbonate Ions]