2. RxnBNH4Cl (s) is added to H2O 3. RxnCAgNO3(aq) and NaCl(aq) are mixed 4. Rxn D Zn(s) is added to HCl(aq) Rxn EMg(s ) is added to NaCl( aq) (tube A) and to CuCl2 (aq) (tube B ) 5. Observations of the solutions prior to adding magnesium: Tube A Tube B 6. Color changes can be caused by certain ions present in solution. Looking at the two solutions you have just prepared (Tbe A and Tube B) before adding any magnesium, which ion(s) is likely responsible for the observed color change, and how do you know? 7. Observations after adding magnesium: Tube A Tube B