Using the activity series (Table 4.5), write balanced chemical equations for the following reactions. If no reaction occurs, simply write No Reaction. Chromium metal is immersed in an aqueous solution of cobalt(II) chloride.

Answer 1

Look at the table referenced. The acitvity series of metals will tell you if a reacton occurs.
If the metal is ABOVE the other metal ION, in the reaction then a reaction will occur inwhich themetal goes to its ion and the metal ion goes to its metal. For example, in the reaction Zn + CuCl2 ==>
Notice the metal Zn is ABOVE the Cu^2+ ION; therefore, a reaction will occur and Zn(s) + CuCl2(aq) ==> ZnCl2(aq) + Cu(s)