2. 6 M HCI is added to a solution of Ag*, Cu²+, Fe3•. A white precipitate forms. Predict which ions are present. Make sure you explain and justify your answer. 3. What reagent(s) can be used to identify and confirm Ag*, Hgz2", and Pb2+ ions?
2. 6 M HCI is added to a solution of Ag*, Cu²+, Fe3•. A white precipitate forms. Predict which ions are present. Make sure you explain and justify your answer. 3. What reagent(s) can be used to identify and confirm Ag*, Hgz2", and Pb2+ ions?
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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2. 6 M HCI is added to a solution of Ag*, Cu²+, Fe3•. A white precipitate forms. Predict which ions are present. Make sure you explain and justify your answer.
3. What reagent(s) can be used to identify and confirm Ag*, Hgz2", and Pb2+ ions?
Please answer both questions will give rating surely
Transcribed Image Text:Ag', Pb?, Hg22, Cu?, Bi3, Fe3.
(use 4 ml of the solution mbxture)
6M HCI
Centrifugation
Decantation
AgCI, PbClz, Hg:Cl2
Cu2, Bi3, Fe3+
hot water
1) 0.1M NH3, pH = 0.5
2) 1M thioacetamide in HCI,
heat for Smin
Centrifugation
Decantation
Centrifugation
Decantation
Pb2.
AgCI, Hg:Cl2
Cool
6M NH3
KI
Fe3.
BizS3 black
CuS black-brown
Centrifugation
Decantation
Pbl2
Yellow precipitate
confirms presence of
Pb*
3% H;02
KSCN
6M HNO,
heat
Ag(NH3)2
Hg + HgNH2Cl
Grey dark precipitate
confirms presence of Hg;"
6M HNO,
FESCN2+
Red solution
confirms
Centrifugation
Decantation
presence of
Fe
AgCI
White precipitate
confirms presence of Ag
Yellow
Bi3, Cu(H20)6?*
blue
6M NH3
Centrifugation
Decantation
Cu(NH3)42
Blue solution
Bi(OH)3
White precipitate
confirms presence of BI'
confirms presence of
Cu
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