# 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:

<table border="1" id="bkmrk-cocl2-cucl2-alcl3-ba" style="border-collapse: collapse; width: 100%; height: 219.35px;"><colgroup><col style="width: 16.6826%;"></col><col style="width: 16.6826%;"></col><col style="width: 16.6826%;"></col><col style="width: 16.6826%;"></col><col style="width: 16.6826%;"></col><col style="width: 16.6826%;"></col></colgroup><thead><tr style="height: 32.3167px;"><td style="height: 32.3167px;">  
</td><td style="height: 32.3167px;">CoCl<sub>2</sub>  
</td><td style="height: 32.3167px;">CuCl<sub>2</sub>  
</td><td style="height: 32.3167px;">AlCl<sub>3</sub>  
</td><td style="height: 32.3167px;">BaCl<sub>2</sub>  
</td><td style="height: 32.3167px;">NiCl<sub>2</sub>  
</td></tr></thead><tbody><tr style="height: 46.4px;"><td style="height: 46.4px;">NaI  
</td><td style="height: 46.4px;">No Reaction  
</td><td style="height: 46.4px;">Turned Brown, Precipitated  
</td><td style="height: 46.4px;">No Reaction  
</td><td style="height: 46.4px;">No Reaction  
</td><td style="height: 46.4px;">No Reaction  
</td></tr><tr style="height: 32.3167px;"><td style="height: 32.3167px;">Na<sub>2</sub>CO<sub>3</sub>  
</td><td style="height: 32.3167px;">Precipitated  
</td><td style="height: 32.3167px;">Precipitated  
</td><td style="height: 32.3167px;">Precipitated  
</td><td style="height: 32.3167px;">Precipitated  
</td><td style="height: 32.3167px;">Precipitated  
</td></tr><tr style="height: 46.4px;"><td style="height: 46.4px;">Na<sub>3</sub>PO<sub>4</sub>  
</td><td style="height: 46.4px;">Tuned Purple, Precipitated  
</td><td style="height: 46.4px;">Precipitated  
</td><td style="height: 46.4px;">Precipitated  
</td><td style="height: 46.4px;">Precipitated  
</td><td style="height: 46.4px;">Precipitated  
</td></tr><tr style="height: 32.3167px;"><td style="height: 32.3167px;">Na<sub>2</sub>SO<sub>4</sub>  
</td><td style="height: 32.3167px;">No Reaction  
</td><td style="height: 32.3167px;">No Reaction  
</td><td style="height: 32.3167px;">No Reaction  
</td><td style="height: 32.3167px;">Precipitated  
</td><td style="height: 32.3167px;">No Reaction  
</td></tr><tr style="height: 29.6px;"><td style="height: 29.6px;">NaOH  
</td><td style="height: 29.6px;">Turned Purple, Precipitated  
</td><td style="height: 29.6px;">Precipitated  
</td><td style="height: 29.6px;">Precipitated  
</td><td style="height: 29.6px;">Precipitated  
</td><td style="height: 29.6px;">Precipitated  
</td></tr></tbody></table>