posted by Mima .
A- a water soluble salt forms a precipitant during Group 3 analysis. An acidic solution of this precipitant and NaBiO3 yields a pinkish color. This same salt has no reaction to concentrated H2SO4 or AgNO3, what is the chemical formula for this salt?
B- a brown colored salt contains a cation from group 3, it has no reaction with concentrated H2SO4 and produces a soluble product with acidic AgNO3 and acidic BaCl2, this salt is not water soluble. What is the chemical formula for this salt?
Mn is in group III and it is oxidized to pink MnO4^- with NaBiO3. The anion probably is sulfate but a confirmatory test would be necessary to be certain; therefore, the salt probably is MnSO4.