f The Department of Chemistry, CUHK
Home > Resources > Secondary School Corner > Resource Book for Sixth-Form Practical Chemistry (Photos - Experiment 6)

Resource Book for Sixth-Form Practical Chemistry

Experiment 6

Synthesis of an Iron(III)-EDTA Complex

image: Na2H2EDTA.2H2O powder Na2H2EDTA·2H2O powder
image: Iron(III) chloride hexahydrate – FeCl3.6H2O Iron(III) chloride hexahydrate – FeCl3.6H2O
image: Aqueous FeCl3 solution Aqueous FeCl3 solution
image: FeCl3 solution is being added to the EDTA solution FeCl3 solution is being added to the EDTA solution
image: Heating the solution mixture on an electric hotplate Heating the solution mixture on an electric hotplate
close-up image: Collecting the product - Na[Fe(EDTA)].3H2O by suction filtration Collecting the product - Na[Fe(EDTA)]·3H2O by suction filtration
image: Dried solid sodium iron(III) ethylenediaminetetraacetate trihydrate complex prepared Dried solid sodium iron(III) ethylenediaminetetraacetate trihydrate complex prepared from Part A:

Na[Fe(EDTA)]·3H2O
image: 0.1 M aqueous Na[Fe(EDTA)] solution 0.1 M aqueous Na[Fe(EDTA)] solution
image: Fe3+ solution + NaOH and Fe3+(EDTA) solution + NaOH in the left and the right test tubes respectively Chemical Tests:

Fe3+ solution + NaOH (left) /
Fe3+(EDTA) solution + NaOH (right)
image: Fe3+ solution + KSCN and Fe3+(EDTA) solution + KSCN in the left and the right test tubes respectively Chemical Tests:

Fe3+ solution + KSCN (left) /
Fe3+(EDTA) solution + KSCN (right)
image: Fe3+ solution + NaF and Fe3+(EDTA) solution + NaF in the left and the right test tubes respectively Chemical Tests:

Fe3+ solution + NaF (left) /
Fe3+(EDTA) solution + NaF (right)

2004 Department of Chemistry, The Chinese University of Hong Kong