Step 3 Mentioned: Solution (acidified with HNO₃) + 12 M HCl (2 drops) + 6 M HCl (2 drops): (white solid with a colorless supernatant)

Part B: Steps 11-12 Supernatant from step 3, pH adjusted to 2 + 1 M Na s Result (1.5pts) Observation for known solution and chemical equations: Normal BI ITU X21 X fri O Ellilli TX Observations: Chemical Equation(s): Part B: Step 13 Precipitate + 1 mL of 3 M HNO3 + heat Result (1 pts) Observation for known solution and chemical equations: Normal X21 X2 EEE fr Tx Observations: Chemical Equation(s): Part B: Step 14 (residual Pb2+ test) Remaining precipitate + 2 M NH4C2H202 + mild heat to dissolve + 1 M K2Cr04 After addition of NH4C2H302 + mild heat After addition of K Cr04 Result (0.5pts) Observation for known solution and chemical equations: Normal BI IU X21 X2 fx Ta | || TX Observations: Chemical Equation(s): Part B: Step 15 Supernatant from step 13+ 15 M NH3 until basic + 60 C H20 bath While adding 15 M NH3 After solution becomes basic After heating in water bath BET Result (1pts) Observation for known solution and chemical equations: Normal BIU XX for 0 | |_| | TX Observations: Chemical Equation(s): Part B: Step 16 Precipitate from step 15 (washed with hot H20) + 3 drops 8 M NaOH + 2 drops SnCl2 Result (1pts) Observation for known solution and chemical equations: Normal . BI IU X21 X1 fx e TX Observations: Chemical Equation(s): Part B: Step 17 Supernatant from step 15+ Nas Result (1 pts) Observation for known solution and chemical equations: Saved Normal BI IU X21 X = for =|| TX Observations: Chemical Equation(s): Part B: Steps 11-12 Supernatant from step 3, pH adjusted to 2 + 1 M Na s Result (1.5pts) Observation for known solution and chemical equations: Normal BI ITU X21 X fri O Ellilli TX Observations: Chemical Equation(s): Part B: Step 13 Precipitate + 1 mL of 3 M HNO3 + heat Result (1 pts) Observation for known solution and chemical equations: Normal X21 X2 EEE fr Tx Observations: Chemical Equation(s): Part B: Step 14 (residual Pb2+ test) Remaining precipitate + 2 M NH4C2H202 + mild heat to dissolve + 1 M K2Cr04 After addition of NH4C2H302 + mild heat After addition of K Cr04 Result (0.5pts) Observation for known solution and chemical equations: Normal BI IU X21 X2 fx Ta | || TX Observations: Chemical Equation(s): Part B: Step 15 Supernatant from step 13+ 15 M NH3 until basic + 60 C H20 bath While adding 15 M NH3 After solution becomes basic After heating in water bath BET Result (1pts) Observation for known solution and chemical equations: Normal BIU XX for 0 | |_| | TX Observations: Chemical Equation(s): Part B: Step 16 Precipitate from step 15 (washed with hot H20) + 3 drops 8 M NaOH + 2 drops SnCl2 Result (1pts) Observation for known solution and chemical equations: Normal . BI IU X21 X1 fx e TX Observations: Chemical Equation(s): Part B: Step 17 Supernatant from step 15+ Nas Result (1 pts) Observation for known solution and chemical equations: Saved Normal BI IU X21 X = for =|| TX Observations: Chemical Equation(s)