Explain why, in a test for sulfate ions, the sample is acidified with hydrochloric acid first. Carbonate ions also produce a white precipitate with barium chloride solution. The acid reacts with ...

The positive areas of the water molecules surround the negative Chloride ions. The negative areas of the water molecules surround the positive sodium ions. As the attractions from the water molecules ...

The positive and negative ions attract each other and form the ionic compound sodium chloride. A sodium and chlorine atom are near each other. An electron from each atom feels the attraction from the ...