Reagent required for determination of hardness of water. , Chemistry

Q. Name of the reagent required for determination of hardness of water sample of complex metric method. Briefly give the function of each reagent used.

Ans. Reagents required for determination of hardness of water sample by complex metric method:

(1)         Standard water sample: To determine the strength of unknown EDTA solution.

(2)         EDTA solution: It is a strong complexing agent. It acts as a tetra dentate or hexa dentate legend and binds with metal ions to give colourless and very stable chelate.

(3)         Buffer solution of pH-10: It is prepared by mixing 67.5 ml of NH4Cl and 570 ml of concentrated ammonia and make up to one Litre with distilled water. It maintains the pH-10 Erichrome black-T work at pH-10.

Indicator solution (Erichrome black-T): It has two ionisable phenol hydrogen atoms. It gives wine red coloured unstable complex with Ca+2 and Mg+2 ions of hard water. 

 

Posted Date: 7/21/2012 7:15:10 AM | Location : United States







Related Discussions:- Reagent required for determination of hardness of water. , Assignment Help, Ask Question on Reagent required for determination of hardness of water. , Get Answer, Expert's Help, Reagent required for determination of hardness of water. Discussions

Write discussion on Reagent required for determination of hardness of water.
Your posts are moderated
Related Questions
Explain The compound decarboxylates The compound decarboxylates; it is a disubstituted malonic acid in which the two a substituents are connected within a ring. The net effect

how to draw molecular orbital diagram for nitrogen?

Octane number - Characteristics of hydrocarbons It is utilized for measuring the knocking character of fuel utilized in petrol engine.  The octane quantity of an offered sample

Synthetic Detergents - Oils and Fats The synthetic Syndets or detergents are substitutes of soaps. They comprise cleansing power as good or better as compared to ordinary soaps

There are two type of vitamines 1.water soluble 2.fat soluble water soluble vitamines are B complex and C vitamines vitamine c is soluble in water so dissolve in water and ca

GEOCHEMISTRY The chemical processes taking place in the crust are especially important as they have build ores, concentrated mineral deposits that are exploited industrially

hybridization in hydroxyl group

It is important to differentiate the stoichiometric or empirical formula of a molecular substance from its molecular formula. The former expresses only the relative numbers of atom

how is the regulation of citrate synthase?

A first order reaction takes 69.3 minutes for 50% completion. Set up an equation for determining the time needed for 80% completion of this reaction.