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The reagent commonly used to determine h...

The reagent commonly used to determine hardness of water titrimetrically is

A

oxalic acid

B

disodium salt of EDTA

C

sodium citrate

D

sodium thiosulphate

Text Solution

Verified by Experts

The correct Answer is:
B
The hardness of water is estimated by simple titration of ethylene diamine tetra acetate (EDTA) solution. EDTA forms stable complexes with the metal ions present in the hard water since stability constants of calcuim and magnesium complexes of EDTA are different, even the selective estimation of these ions is possible.
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RESONANCE ENGLISH-EQUIVALENT CONCEPT & TITRATIONS-APSP (Part-I)
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  7. An aqueous solution of 6.3 gm oxalic acid dihydrate is made upto Th...

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  8. During the electrolysis of conc H(2)SO(4), it was found that H(2)S(2)...

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  9. 1 mole of how many of the following acids neutralize exactly one mol ...

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  15. In the following reaction 2MnO(4^(-))+5H(2)O(2)^(18)+6H^(+)rarr2Mn^(2+...

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  16. One gram equimolecular mixture of Na(2)CO(3) and NaHCO(3)is reacted wi...

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  18. Equivalent weight of chlorine molecule in the equation is : 3Cl(2)+6...

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  19. Cr(2)O(7)^(2-)overset(H^(+))rarrCr^(3+), Eq. wt. of Cr(2)O(7)^(2-) is ...

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