Answer Happy

a. a redox rxn btwn cobalt and zinc ions, precipitate of zinc chloride formed, no rxn occured btwn added reagent and contents of soln, redox rxn occurred btwn cobalt ions and zinc solid
b.increase amnt of sodium ions, rxn removed chloride ions, increased the amnt of chloride ions, rxn removed cobalt ions
c.decrease or increase
d. reverse or forward
Josh decided to investigate the effect of the reagents listed in Part B of the lab on the cobalt chloride system described on page 60 of the lab manual. Their cobalt chloride solution composed of 0.20 M CoCl2 in 4.0 M NaCl. Identify one reaction they would have observed that to push the reaction either in the forward or reverse direction by filling in the blanks in the statement given below. Identify what phenomenon occurred that caused the equilibrium to shift. Zn shot was added to the solution of 0.20 M CoCl2 in 4.0 M NaCl, [ Select ] This [Select ] solution [ Select ] the concentration. This resulted in the equilibrium shifting in the [Select) direction