Complex Ions Worksheet Page 2

C h e m g u i d e – q u e s t i o n s

4. The diagram below shows the very simplified structure of haemoglobin.

a) What is the name of the quadridentate ligand in the centre of the diagram?

b) Explain how haemoglobin is involved in the transport of oxygen around the body.

c) How does carbon monoxide disrupt this?

5. The diagram shows the complex formed between copper(II) ions and EDTA

ions. EDTA

is a

hexadentate ligand.

EDTA forms similar complexes with lots of other metals. Writing the EDTA simply as EDTA, what

would be the formula of the complex between EDTA

and

a) Cr

ions;

b) Ag

ions?

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