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Qualitative test of iron complex   One test tube contains K3[Fe(C2O4)3].3H2O, one test tube contains ferric ammonium sulfate.   To each test tubes, add a small amount of KSCN, then add more oxalic acid.   For the potassium complex, the following colour changes are observed: Light green -> Yellow (With KSCN) -> Dark Yellow (Oxalic acid)   For the Ferric ammonium sulfate, the following colour changes are obsserved: Light brown -> Blood red (KSCN) -> Yellow (Oxalic)   Qns: Deduce the relative stabilities of the Fe(III) oxalate, aqua and thiocyanate complexes. Explain the order of stability.

Qualitative test of iron complex   One test tube contains K3[Fe(C2O4)3].3H2O, one test tube contains ferric ammonium sulfate.   To each test tubes, add a small amount of KSCN, then add more oxalic acid.   For the potassium complex, the following colour changes are observed: Light green -> Yellow (With KSCN) -> Dark Yellow (Oxalic acid)   For the Ferric ammonium sulfate, the following colour changes are obsserved: Light brown -> Blood red (KSCN) -> Yellow (Oxalic)   Qns: Deduce the relative stabilities of the Fe(III) oxalate, aqua and thiocyanate complexes. Explain the order of stability.

Chemistry
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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Qualitative test of iron complex

 

One test tube contains K3[Fe(C2O4)3].3H2O, one test tube contains ferric ammonium sulfate.

 

To each test tubes, add a small amount of KSCN, then add more oxalic acid.

 

For the potassium complex, the following colour changes are observed: Light green -> Yellow (With KSCN) -> Dark Yellow (Oxalic acid)

 

For the Ferric ammonium sulfate, the following colour changes are obsserved: Light brown -> Blood red (KSCN) -> Yellow (Oxalic)

 

Qns: Deduce the relative stabilities of the Fe(III) oxalate, aqua and thiocyanate complexes. Explain the order of stability.

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