1. Prepare two separate data tables for the known (listed above) and unknown (A through F) solutions that you will  to record all observations.  You may use the provided template (click here) but make sure that you write in the proper chemical formulas  in the headers of one and the unknown letter codes in the other one.

2. EXPLAIN why  you need to use 12 separate pipets in this experiment, each dedicated to its own solution, .
 
 
 
 
 

3. List at least  four general solubility rules  for ionic compounds (that would used to predict whether a product in a  reaction from this experiment  will  be  a solid or will form an aqueous solution).
 
 
 
 
 

4.  A student was given the following five  labeled solutions: NiCl₂, Pb(NO₃)₂, NaOH, Na₂C₂O₄, and CuSO₄.
After systematically mixing the solutions in pairs, the student recorded her observations in Table 3. She was also given the same five solutions in containers labeled A -E. In Table 4, she recorded the results of mixing those solutions in pairs.
Identify the 5 unknown solutions. Include the thought process by which you arrived at your conclusion.

Table 3       KNOWNS                                                                  Table 4    UNKNOWNS

	CuSO4	Na2C2O4	NaOH	Pb(NO3)2		E	D	C	B
NiCl2	NR., blue green solution	NR.,  green solution	green ppt,  green solution	N.R, green solution	A	blue ppt.,  Blue solution	white ppt, colorless solution	N.R.  Colorless solution	green ppt,  green solution
Pb(NO3)2	white ppt,blue solution	white ppt., Colorless solution	white ppt, colorless solution		B	N.R.  Blue-green solution	N.R. Green solution	N.R.  green solution
NaOH	blue ppt, blue	NR., colorless			C	white ppt, blue solution	white ppt, colorless
Na2C2O4	white ppt,blue				D	white ppt, blue solution