Experimental Flowchart Cl-, I-, CO32-, SO42- (aq) Acidify with 6M HNO3 & confirm with litmus paper. (soln.) (gas) Eqn. 1 (aq) Add 0.2 M Ba(NO3)2 CO2 (g) & centrifuge if ppt. forms (soln.) (ppt.) Eqn. 2 (aq) (aq) (s) Cl- & I- BaSO4 (aq) Note: this ppt. may take Add 0.2 M AgNO3 30-60 seconds to form. Eqns. 3 and 4 (soln.) (ppt.) discard AgCl (s) & AgI (s) (aq) Basify solution with 6 M NH3 & confirm with litmus paper. Centrifuge if ppt. is still present. (soln.) Eqn. 5 (ppt.) Ag(NH3)2+ AgI (s) Cl– (aq) + Acidify with 6M HNO3 (aq) (ppt.) (aq) Add 15M NH3 Eqn. 6 & confirm ppt. is still present. (s) AgCl (s) AgI
Experimental Flowchart Cl-, I-, CO32-, SO42- Acidify with 6M HNO3 (aq) & confirm with litmus paper. (soln.) (gas) Eqn. 1 Add 0.2 M Ba(NO3)2 (aq) & centrifuge if ppt. forms CO2 (g) (soln.) (ppt.) Eqn. 2 Cl- (aq) & I- (aq) BaSO4 (s) Add 0.2 M AgNO3 (aq) Eqns. 3 and 4 Note: this ppt. may take 30-60 seconds to form. (soln.) (ppt.) discard AgCl (s) & AgI (s) Basify solution with 6 M NH3 (aq) & confirm with litmus paper. Centrifuge if ppt. is still present. (soln.) Eqn. 5 (ppt.) Ag(NH3)2+ + Cl– (aq) AgI (s) (ppt.) Acidify with 6M HNO3 (aq) Eqn. 6 Add 15M NH3 (aq) & confirm ppt. is still present. AgCl (s) AgI (s)
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