Chemistry - Coordination Chemistry Question with Solution | TestHub
ChemistryCoordination ChemistryVBT,CFT(complex compound)Medium2 minQB
ChemistryMediummultiple choice
The red colour of is removed on addition of excess of due to the formation of compound (P). Select CORRECT about (P)
Options:(select one or more)
Answer:
A, B
Solution:
Fe³⁺ forms a red complex, , but excess C₂O₄²⁻ (oxalate) replaces SCN⁻ and forms ³⁻. This removes the red color.
In ³⁻, Fe is still in the +3 oxidation state, so (C) is wrong.
Oxalate is a bidentate ligand, forming an octahedral chelate complex which is chiral (optically active).
Fe³⁺ has unpaired electrons, so the complex is paramagnetic.
It does not show geometrical isomerism (only optical isomerism is possible).
Correct statements: (A) and (B)
Stream:JEESubject:ChemistryTopic:Coordination ChemistrySubtopic:VBT,CFT(complex compound)
⏱ 2mℹ️ Source: QB
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