In this lecture we will discuss calculation of hardness based on EDTA method by unitary method and by normality concept. Numericals based on EDTA method / complexometry How to solve EDTA problems Numericals on Hardness estimation by EDTA method Engineering chemistry hardness of water Calculation of hardness by EDTA method Water - Analysis and Treatment EasyEngineeringChemistry #Hardnesscalculation #Engineeringchemistry Ist year engineering chemistry RGPV engineering chemistry Hardness of water calculations Hardness of water kaise calculate kare 1. Link for - EDTA method part 1 • Hardness Determination by EDTA method I Co... 2. Link for - Principle of EDTA method • EDTA Method I Principle of EDTA Method I P... 3. Link for - Procedure & calculation of EDTA method • Procedure & calculation of EDTA method I E... 4. Link for - Numericals part 1 • Numericals to calculate Hardness in water ... 5. Link for - Numericals part 2 • Numericals to calculate Hardness in water ... 6.Link for - Sources and impurities of water • Sources and Impurities in water II Water s... 7.Link for - Hardness ,Types of hardness, Degree of hardness or CaCO3 equivalent, Multiplication factor, Units of hardness--- • Hardness of Water l Hardness and its units... Engineering Chemistry 1st year Engineering Chemistry 1st year RGPV UNIT - I