Part A: Group B1 1. A Group B1 unknown is treated according to the procedure of Part A. At each stage below, state what cations may be present and which are absent a. The initial Group Bl oxide/hydroxide precipitate is treated with HCI and a clear yellow solution results. b. This solution is treated with H.0, and heated. One drop of this solu- tion is added to 1 drop of HARS solution, and a clear yellow solution results. c. The solution from (a) is treated with NaBiO3. A clear purple solution results. d. Two drops of the solution from (a) is treated with 6 M NaOH and solid Sncl. A black precipitate is observed. e. The remaining solution from (a) is divided in two portions. KSCN is added to one, and a dark red solution results. K Fe(CN), is added to the other, and a dark blue precipitate results