Certain insoluble organic compounds can be rendered soluble in water by the addition of an acidic or a base. Why do these organic compounds become soluble in water? a. The compound reacts to form water soluble carboxyl groups.
b. The acid or base decreases the polarity of the water and make it easier for the compound to dissolve.
c. The acid or base increase the polarity of the water and make it easier for the compound to dissolve.
d. The acid or base acts on the water and makes it a more hydrophobic solvent.
e. The organic compound becomes ionic.
f. The organic compound reacts and loses hydrophobic groups.

The mixing of barium chloride and sodium sulfate is a precipitate reaction. This reaction generates barium sulfide and sodium chloride-Barium chloride and sodium sulfate are liquids, and barium sulfide or sodium chloride must be a solid.

Explanation:

It is known that when sodium sulfate is mix with barium chloride the output is  sodium chloride and barium sulfate. When the solution of Sodium Sulfate and Barium Chloride are mixed together the product of the reaction will be  barium sulfate and sodium chloride. This is an example of double displacement reaction.

Thus we can say that ,the mixing of barium chloride and sodium sulfate is a precipitate reaction. This reaction generates barium sulfide and sodium chloride-Barium chloride and sodium sulfate are liquids, and barium sulfide or sodium chloride must be a solid.