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.

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter9: Complexometric And Precipitation Titrations

Section: Chapter Questions

Problem 7P

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