CONFIRMATORY TEST FOR CATIONS Flashcards by Saira Shane Clarite

Ion: Silver (Ag)

Reagent: Hydrochloric Acid (HCl)

Product: Silver Chloride (AgCl)

Result:

A. White to gray ppt
B. Canary yellow ppt
C. Brownish red ppt

A. White to gray ppt

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Ion: Silver (Ag)

Reagent: Potassium Chromate (K2CrO4)

Product: Silver Chromate (Ag2CrO4)

Result:

A. White to gray ppt
B. Canary yellow ppt
C. Brownish red ppt

C. Brownish red ppt

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Ion: Silver (Ag)

Reagent: Potassium Iodide (KI)

Product: Silver Iodide (Agl)

Result:

A. White to gray ppt
B. Canary yellow ppt
C. Brownish red ppt

B. Canary yellow ppt

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Ion: Lead (Pb)

Reagent: Hydrochloric acid (Hcl)

Product: Lead (ll) chloride (PbCl2)

Result:

A. Yellow ppt
B. Black ppt
C. White crystal ppt

C. White crystal ppt

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Ion: Lead (Pb)

Reagent: Potassium Chromate (K2CrO4)

Product: Lead Chromate (PbCrO4)

Result:

A. Yellow ppt
B. Black ppt
C. White crystal ppt

A. Yellow ppt

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Ion: Lead (Pb)

Reagent: Potassium Iodide (Kl)

Product: Lead (ll) Iodide

Result:

A. Blue ash
B. Yellow ppt
C. Reddish brown

Yellow ppt

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Ion: Hg2+2

Reagent: Hydrochloric Acid (Hcl)

Product: Mercury (l) Chloride (Hg2Cl2)

Result:

A. Orange red ppt
B. Green ppt
C. White curdy opt

C. White curdy ppt

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Ion: Hg2+2

Reagent: Potassium Chromate (K2CrO4)

Product: Mercury (ll) Chromate Hg2CrO4

Result:

A. Orange red ppt
B. Green ppt
C. White curdy opt

A. Orange red ppt

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Ion: Hg2+2

Reagent: Potassium Iodide (Kl)

Product: Mercury Iodide (Hg2l2)

Result:

A. Orange red ppt
B. Green ppt
C. White curdy opt

B. Green ppt

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Ion: Bismuth Cation (Bi+3)

Reagent: Sodium Stannite (Na2SnO2)

Product: Bismuth (Bi)

Result:

A. Yellow ppt
B. Blue ppt
C. Black ppt

C. Black ppt

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Ion: Cupric (Cu+2)

Reagent: Potassium Ferrocyanide K4Fe(CN)6

Product: Copper (ll) Ferrocyanide Cu2Fe(CN)6

Result:

A. White ppt
B. Amorphous reddish brown ppt
C. White to gray ppt

A. Amorphous reddish brown ppt

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Ion: Cupric (Cu+2)

Reagent: Potassium Ferrocyanide K4Fe(CN)6

Product: Cadmium Ferrocyanide Cd2Fe(CN)6

Result:

A. White ppt
B. Amorphous reddish brown ppt
C. White to gray ppt

A. White ppt

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Ion: Mercury (ll) Ion Hg+2)

Reagent: Tin (ll) Chloride (SnCl2)

Product: Mercury (l) Chloride to Mercury (Hg)

Result:

A. White ppt
B. Amorphous reddish brown ppt
C. White to gray ppt

C. White to gray ppt

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Ion: Mercury (ll) Ion (Hg+2)

Reagent: Potassium Iodide (Kl)

Product: Mercury (ll) Iodide (HgI2)

Result:

A. White to gray ppt
B. Scarlet red
C. Yellow ppt

B. Scarlet red ppt

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Ion: Sb+3

Reagent: Aluminum (Al)

Product: Antimony (Sb)

Result:

A. Black ppt
B. Red ppt
C. Yellow ppt

A. Black ppt

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Ion: As+3

Reagent: Sodium Hydroxide (NaOH),
Aluminum (Al)

Product: Arsine (AsH3), Silver (Ag

Result:

A. Colorless gas, black ppt
B. Colorless sol’n, white to gray ppt
C. Yellow solution

A. Colorless gas, black ppt

Ion: Sn+2

Reagent: HgCI2

Product: Hg2Cl2 to Hg

Result:

A. Green ash
B. White to gray ppt
C. Brownish red ppt

B. White to gray ppt

Ion: Sn+4

Reagent: HgCI2

Product: HgCI2 to Hg Reduction of Sn+4 to Sn+2

Result:

A. White to gray ppt
B. Colorless sol’n white to gray ppt
C. Brownish red ppt

B. Colorless sol’n white to gray ppt

Ion: Al+3

Reagent: Aluminon test (NH4OH aluminon)

Product: Al(OH)³

Result:

A. Canary yellow ppt
B. Green ppt
C. White gelatinous ppt to red lake with aluminon

C. White gelatinous ppt to red lake with aluminon

Ion: Al+3

Reagent: Thenards Blue test (NH4O, Co(NO3)2

Product: Co(AlO)2

Result:

A. Purple solution
B. Blue ash
C. Colorless sol’n white to gray ppt

B. Blue ash

Ion: Cr+3

Reagent: NaOH, H2O2 or Na2O2

Product: Na2CrO4

Result:

A. Yellow solution
B. Yellow ppt
C. Canary yellow

A. Yellow solution

Ion: Cr+3

Reagent: AgNO3

Product: Ag2CrO4

Result:

A. Yellow solution
B. Blue solution
C. Brownish red ppt

C. Brownish red ppt

Ion: Cr+3

Reagent: BaCI2

Product: BaCrO4

Result:

A. Yellow ppt
B. Blue solution
C. Black ppt

A. Yellow ppt

Ion: Cr+3

Reagent: Pb(Ch3COO)2

Product: CrO4

Result:

A. Purple solution
B. Blue ppt
C. Yellow ppt

C. Yellow ppt

Ion: Zn+2 Reagent: K4Fe(CN)6 Product: Zn2Fe(CN)6 Result: A. White ppt B. White to gray ppt C. White curdy ppt

A. White ppt

Ion: Zn+2 Reagent: Rinmann's Green test Co(NO3), NH4OH Product: CoZnO2 Result: A. Green Ash B. Black ppt C. Blue ash

A. Green Ash

Ion: Mn+2 Reagent: HNO3, NaBiO3 Product: HMnO4 Result: A. Brownish red ppt B. Purple solution C. Yellow solution

B. Purple solution

Ion: Fe+3 Reagent: KSCN Product:FeSCN Result: A. Brownish red ppt B. Scarlet red ppt C. Blood red soln ppt

C. Blood red soln ppt

Ion: Fe+3 Reagent: K3Fe (CN)6 Product: Fe4(Fe(CN)6)3 Result: A. Brown soln B. Blood red soln C. Prussian blue ppt

C. Prussian blue ppt

Ion: Fe+3 Reagent: K3Fe(CN)6 Product: Fe(CN)3 Result: A. Brown soln B. Prussian blue C. Yellow sol

A. Brown soln

Ion: Fe+2 Reagent: K4Fe(CN)6 Product: Fe2Fe(CN)6 Result: A. White to black ppt B. White to blue ppt C. White to gray ppt

B. White to blue ppt

Ion: Fe+2 Reagent: K3Fe(CN)6 Product: Fe3(Fe(CN)6)2 Result: A. White to blue ppt B. Gray ppt C. Blue ppt

C. Blue ppt

Ion: Co+2 Reagent: KNO2, HAC Product: K3Co(NO2)6 Result: A. Yellow ppt B. Yellow soln C. Green ppt

A. Yellow ppt

Ion: Ni+2 Reagent: NH4OH, C8H7N2O2 Product: C8H14O4N4Ni Result: A. Blue ppt B. Brown soln C. Cherry red ppt

C. Cherry red ppt

Ion: Ba+2 Reagent: K2CrO4 Product: BaCrO4 Result: A. Cherry red ppt B. Prussian blue ppt C. Yellow ppt

C. Yellow ppt

Ion: Ba+2 Reagent: (NH4)2SO4 Product: BaSO4 Result: A. White to blue ppt B. White ppt C. White to gray ppt

B. White ppt

Ion: Ba+2 Reagent: Na2HPO4, NH4OH Product: Ba3PO4 Result: A. White amorphous ppt B. White gelatinous ppt C. White to blue ppt

A. White amorphous ppt