Ionic compound AB is placed in water in beaker 1 and dissolves completely. Ionic compound CD is placed in water in beaker 2 and dissolves completely. When solutions in beaker 1 and 2 are mixed, a blue solid settles at the bottom of the container after 1.5 minutes and is identified as AD. Which of the following are spectator ions? A.  A + and D - only B.  A and D only C.  C + and B - only D.  C and B only E.  A + , B -, C +, and D -

2

QUESTION 9 TABLE 4.1 Solubility Guidelines for Common Ionic Compounds in Water Soluble Ionic Compounds Important Exceptions Compounds containing NO3 C2H3O2 None None 2+ Compounds of Ag*, Hg,² Compounds of Ag*, Hg2²+, and Pb2+ Compounds of Ag*, Hg2²+, and Pb²+ Compounds of Sr2+, Ba²+, and Pb²+ Br I 2+ SO,2- Hg2 and Pb2+ Insoluble Ionic Compounds Important Exceptions Compounds of NH4*, the alkali metal cations, and Ca2+, Sr²+, and Ba²+ Compounds of NH4* and the alkali metal Compounds containing s2- CO,?- cations PO,3– Compounds of NH,* and the alkali metal

An aqueous solution of hydroiodic acid is standardized by titration with a 0.179 M solution of barium hydroxide. If 19.1 mL of base are required to neutralize 10.1 mL of the acid, what is the molarity of the hydroiodic acid solution? ____M hydroiodic acid