1)Write a balanced chemical equation for the following cations, include states as a subscript: Hg2^2+, Ag+, and Cu+ . 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? 4. List all the solid precipitates that you encounter during the experiment and their colors. 5. What is the precipitating reagent for silver ion in Step 1? Would a solution of NaCl work as well? Why or why not? Ag', Pb?, Hg22, Cu?, Bi3, Fe3.(use 4 ml of the solution mbxture)6M HCICentrifugationDecantationAgCI, PbClz, Hg:Cl2Cu2, Bi3, Fe3+hot water1) 0.1M NH3, pH = 0.52) 1M thioacetamide in HCI,heat for SminCentrifugationDecantationCentrifugationDecantationPb2.AgCI, Hg:Cl2Cool6M NH3KIFe3.BizS3 blackCuS black-brownCentrifugationDecantationPbl2Yellow precipitateconfirms presence ofPb*3% H;02KSCN6M HNO,heatAg(NH3)2Hg + HgNH2ClGrey dark precipitateconfirms presence of Hg;"6M HNO,FESCN2+Red solutionconfirmsCentrifugationDecantationpresence ofFeAgCIWhite precipitateconfirms presence of AgYellowBi3, Cu(H20)6?*blue6M NH3CentrifugationDecantationCu(NH3)42Blue solutionBi(OH)3White precipitateconfirms presence of BI'confirms presence ofCu

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Chemistry

10th Edition

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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1)Write a balanced chemical equation for the following cations, include states as a subscript: Hg2^2+, Ag+, and Cu+ .

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?

4. List all the solid precipitates that you encounter during the experiment and their colors.

5. What is the precipitating reagent for silver ion in Step 1? Would a solution of NaCl work as well? Why or why not?

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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