Question

A solution contains one or more of the following ions: Ag+, Ca2+, and Co2+. Lithium bromide is added to the solution and no precipitate forms. An excess of lithium sulfate is then added to the solution and a precipitate forms. The precipitate is filtered off and lithium phosphate is added to the remaining solution, producing a precipitate.

Answer 1

1. Ag+ precipitates. 2. Ca2+ precipitates. 3. Co2+ precipitates.

Step-by-step explanation:

First AgBr is formed which is practically insoluble in water. CaBr2 and CoBr2 are soluble.

Then precipitates CaSO4. CoSO4 is soluble.

And then precipitates Co2(PO4)3 which is insoluble.