1. List all the possible actions that give a red flame test and precipitate in the presence of sulfate ions.

Question

2. If all traces of the two metal cations are removed from the solution at test 4, what might the flame colour be when a sample of the solution is tested? Explain your answer

Answer 1

1. Ba, Ca, Sr give a ppt of the MSO4. Both Ca and Sr give a red flame but not the same color red.
2. If Ca and Sr are removed a red color might suggest Li. Again, not the same color red; i.e., more crimson.