EDTA Titrations Flashcards
1
Q
EDTA Titration
A
complexometric titration (forms a complex)
2
Q
Complex
A
Lewis Acid (metal ions) with one or more Lewis Base
3
Q
Lewis Acid/Base
A
Can accept electrons.
Can donate electrons
4
Q
Ligand
A
Lewis Base attached to one or more lewis acids
5
Q
Monodentate
Multidentate
A
- “one toothed”, attaches to Lewis Acid in one place
- attached in multiple places
6
Q
ATP-adenosine triphosphate
A
tetradentate.
7
Q
EDTA
A
hexadentate. Ethylene Diamine Tetraacetic Acid. 6 coordinate
8
Q
Chelating Agent
A
EDTA, NTA, DTPA. Part of the therapy that clears excess iron
9
Q
Coordinate Number
A
iron-7
calcium-8
plutonium-9
10
Q
Conditional Formation Constant
A
formation constant defined in terms of the Y^-4 EDTA form
11
Q
pH Effects
A
- low pH, complexes become less stable.
- sharpness of end point tells reaction completeness
