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
Being simultaneously basic and acidic, water undergoes autoprotolysis, also called self-ionization: The equilibrium constant is   H3O+ in these equations is gene

50ml of 0.1M NH 4 OH ,25ml NH 4 Cl weere used to make a buffer . what is the PH is if Pk b is 4.8? Solution) The given buffer is a base buffer [NH4OH] =[(50*0.1)/75] [NH4Cl] =[(

WHAT IS THE PRINCIPLE OF EDTA TITRATION N?

how can one use programming in the the chemical field?

As electron moves away from the nucleus, its potential energy: (1) Increases (2) Decreases (3) Remains constant (4) None of these Ans:  Increases


Libermaan''s nitroso reaction mechanism

what is degree of freedom?

Properties of Nitrophenols:  O-Nitrophenol is a yellow in colour crystalline compound, whereas m- and p-isomers are colourless crystalline compounds. Isomer             orth