Page 15 solutions to the proper location. Some of the solutions contain transition metal ions, so should not be washed down the drain. Instead, dump the contents onto a paper towel in the tray labeled "transition metal waste". Wash some items with water and clean others with cotton swabs.  Safety: Barium is toxic, don't touch. wash hands thoroughly. Data Table: CoCl 2 CuCl 2 AlCl 3 BaCl 2 NiCl 2 NaI No Reaction Turned Brown, Precipitated No Reaction No Reaction No Reaction Na 2 CO 3 Precipitated Precipitated Precipitated Precipitated Precipitated Na 3 PO 4 Tuned Purple, Precipitated Precipitated Precipitated Precipitated Precipitated Na 2 SO 4 No Reaction No Reaction No Reaction Precipitated No Reaction NaOH Turned Purple, Precipitated Precipitated Precipitated Precipitated Precipitated