You are asked to analyze an aqueous solution (X) and determine what's in it. You pour some of your sample X into a test tube and add a few drops of an acid. No observable reaction occurs. Then you add a few drops of barium chloride solution to your mixture (containing an aqueous solution X and the acid), a white precipitate forms.
1. What can you conclude about the solution X, based on this experiment?
(Circle as many choices as applies.)
A. Solution X must contain a covalent (molecular) compound.
B. Solution X does not react with barium chloride.
C. This experiment is inconclusive, and does not provide any information about the contents of X.
D. Solution X must contain sulfate ion.
E. Solution X does not contains any ionic compound.
F. The solution X contains an ionic compound.