Question

Flow Chart for the Determination of Group I Cations Ag$^{+}$, Pb$^{2+}$, Hg$_{2}^{2+}$ + 6 M HCl Centrifuge Solid Liquid (AgCl, PbCl$_{2}$, Hg$_{2}$Cl$_{2}$) (Discard) Add Water, Heat & Centrifuge Solid 6M NH$_{4}$OH Liquid 6M Acetic Acid, 1 M K$_{2}$CrO$_{4}$Centrifuge Gray solid = Hg Solid Liquid 6M HNO$_{3}$ Yellow Precipitate = PbCrO$_{4}$ White Precipitate = AgCl

          Flow Chart for the Determination of Group I Cations
Ag$^{+}$, Pb$^{2+}$, Hg$_{2}^{2+}$
+ 6 M HCl
Centrifuge
Solid
Liquid
(AgCl, PbCl$_{2}$, Hg$_{2}$Cl$_{2}$)
(Discard)
Add Water, Heat
& Centrifuge
Solid
6M NH$_{4}$OH
Liquid
6M Acetic Acid,
1 M K$_{2}$CrO$_{4}$Centrifuge
Gray solid
= Hg
Solid
Liquid
6M HNO$_{3}$
Yellow Precipitate =
PbCrO$_{4}$
White Precipitate =
AgCl

Flow Chart for the Determination of Group I Cations
Ag^+, Pb^2+, Hg2^2+
+ 6 M HCl
Centrifuge
Solid
Liquid
(AgCl, PbCl2, Hg2Cl2)
(Discard)
Add Water, Heat
Centrifuge
Solid
6M NH4OH
Liquid
6M Acetic Acid,
1 M K2CrO4Centrifuge
Gray solid
= Hg
Solid
Liquid
6M HNO3
Yellow Precipitate =
PbCrO4
White Precipitate =
AgCl

Added by Virginia W.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Sri K

01/30/2023

Step 1

This indicates the presence of Ag+, Pb2+, or Hg2+ ions in the solution. Show more…

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Prelaboratory Assignment: Qualitative Analysis Group I Cations 1. Write balanced equations describing each of the reactions in the experiment. 2. A solution may contain any of the three group I cations. A white precipitate is formed upon the addition of HCl. This precipitate is partially soluble in hot water and upon the addition of NH4OH. Which group I ions are present? Which are absent? Which are in doubt? How would you remove all doubt? Flow Chart for the Determination of Group I Cations AgPb+Hg +6MHC1 Centrifuge Solid Liquid AgCl, PbCl, HgCl (Discard) Add Water, Heat & Centrifuge Solid Liquid 6M Acetic Acid 1MKCrO 6M NH4OH Centrifuge Gray solid = Hg Solid Liquid 6MHNO Yellow Precipitate = PbCrO White Precipitate = AgCl