Aim | Water Hardness Titration Experiment
Determination of water hardness through estimation of content of CaCO3 in tested sample.
Method Determination of Water Hardness by Complexometric Titration
Complexometric titration method
Objectives: Determination of Water Hardness by Complexometric Titration
<p>Determination of concentration of total amount of calcium and magnesium salts in water.
Knowing about drawbacks of high water hardness in our real life.
Understanding the complexation reactions.
Understanding the concept of direct titration.</p>
Background: Determination of Water Hardness by Complexometric Titration
Complexometric reaction involves reaction of metal with ligand to form complex.
Stability constant (k): An equilibrium constant for the formation of complex in a solution. It measures the strength of interaction between reagents that come together to form complex.
High stability constant à high tendency to form complex.Principle | Water Hardness Titration Virtual Experiment
EDTA is a sequestering agent which can form complex with calcium present in water sample
Mn+ + H2Y2- ⇋ MY (n-4) + 2H
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