A solution is prepared by dissolving 2.95 g Co2(SO4)3 in enough water to make 1.00 L of red solution; the red color is due to the presence of the cobalt ions.  To this solution was added 1.52 g of magnesium powder.   A redox reaction occurred,  in which the magnesium atoms lose all of their valence electrons and the red color of the solution fades. (a) Write the total reaction that occurs and the net ionic equation for the redox process.  (Assume that one of the products of the redox reaction is a metal.) (b) Calculate the initial concentration of cobalt ions, the final concentration of cobalt ions, and the final concentration of magnesium ions.

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A solution is prepared by dissolving 2.95 g Co2(SO4)3 in enough water to make 1.00 L of red solution; the red color is due to the presence of the cobalt ions.  To this solution was added 1.52 g of magnesium powder.   A redox reaction occurred,  in which the magnesium atoms lose all of their valence electrons and the red color of the solution fades.

(a) Write the total reaction that occurs and the net ionic equation for the redox process.  (Assume that one of the products of the redox reaction is a metal.)

(b) Calculate the initial concentration of cobalt ions, the final concentration of cobalt ions, and the final concentration of magnesium ions.

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