Reagent required for determination of hardness of water. , Chemistry

Assignment Help:

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. 

 


Related Discussions:- Reagent required for determination of hardness of water.

Chain lengthening of aldoses or killiani-fischer synthesis, Chain Lengtheni...

Chain Lengthening of Aldoses (Killiani-Fischer synthesis) The conversion of an aldose to the next higher member includes the subsequent steps : (a) Creation of a cyanohydrin

Which one is the electronic configuration of fe+2, Which one is the electro...

Which one is the electronic configuration of Fe +2 : (1) 1s 2, 2s 2 , 2p 6 , 3s 2 , 3p 6 , 3d 6          (2) 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 4 , 4s 2 (3) 1s 2 , 2s 2 ,

Chemicals in food, Chemicals in food Several chemicals are added to foo...

Chemicals in food Several chemicals are added to food for their preservation and improving their appeal. These involve flavorings, antioxidants, fortifiers, sweeteners, dyes, e

Explain hybrid rocket propellants, Explain the following and give one examp...

Explain the following and give one example of each: a. Tranquillizers b. Mordant c. Hybrid rocket propellants

Condensation with formaldehyde - miscellaneous reactions, Condensation with...

Condensation with formaldehyde - Miscellaneous reactions Phenol condenses with formaldehyde (excess) in presence of sodium hydroxide or acid (H + ) for about a week to form a p

Armomatic compounds, write the chemical properties of aromatic compounds.

write the chemical properties of aromatic compounds.

Physical properties of dihydrogen, I want information on physical propertie...

I want information on physical properties of dihydrogen

Explain electrical properties of solids., On the basis of electrical conduc...

On the basis of electrical conductivity the solids can be broadly classified into three types: (a)  Metals (b)   Insulators (c)  Semiconductors Electrical conductiv

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd