# 5. Consider the carbonate ion test that you might perform on a typical +2 metal carbonate…

5. Consider the carbonate ion test that you might perform on a typical +2 metal carbonate as an equilibrium: MH20 +CO a) Based on this equilibrium and the observed (limited) solubility of C02 in water, predict the outcome of bubbling C02 gas through solutions of each of the three +1/+ 2 cations studied in this experiment. Justify your prediction In light of your answer to part (a) of this question, explain why a solution of Zn (H20)2 (0H)4 upon treatment with C02 gas, first gives a precipitate of Znc03 then the precipitate dissolves on continued addition of CO2. Write equations for both reactions involved. Equation: Equation: