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B'coz all calculations done with CACO3 equivalents needs a standard factor to determine hardness.

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13y ago

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How many grams of EDTA do you add to make a 3.7 percent EDTA solution?

To make a 3.7% EDTA solution, you would add 3.7 grams of EDTA to 100 mL of solution.


When edta is insoluble in distilled water then how to make 0.01N edta solution?

use heat to heat the solution and add EDTA slowly to dissolve it.


Why we add buffer to standardization of ED-TA solution?

Buffers are added to systems in order to resist any minor changes in pH. EDTA is an acid, (ethylene diamine tetracetic acid), and so a buffer is used in order to maintain a certain pH even after the EDTA is added.


Why is it necessary to standardize the NaOH solution?

It is necessary to standardize the NaOH solution to ensure accurate and consistent results in experiments or analyses. Standardization involves determining the exact concentration of the solution, which is important for precise measurements and reliable data.


What is the difference between titration and standardization?

Titration is a method used to determine the concentration of a substance in a solution by reacting it with a known concentration of another substance. Standardization, on the other hand, is the process of determining the exact concentration of a solution or reagent by titrating it against a primary standard. So, while titration is the general method for concentration determination, standardization is a specific process within titration used to calibrate solutions or reagents.


Why is Ammonia solution added while preparing EDTA solution?

Ammonia solution is added to increase the pH of the solution to create a favorable environment for the formation of stable metal-EDTA complexes. This helps in improving the efficiency of complexation and enhances the chelating properties of EDTA.


How much gm of disodium edta require to prepare 0.05 m disodium edta solution?

To prepare a 0.05 M disodium EDTA solution, you would need to dissolve 3.72 grams of disodium EDTA dihydrate (Na2C10H14N2Na2·2H2O) in enough water to make 1 liter of solution.


What does standardise EDTA mean?

Standardizing EDTA refers to determining the exact concentration of the EDTA solution by titrating it against a known concentration of a metal ion solution. This process ensures that the EDTA solution is accurately diluted or concentrated to achieve consistent and reliable results in complexometric titrations.


What is the need for an ammonical buffer solution in the determination of hardness of water by edta titration?

during the complexometric titration using edta it is very necessary to maintain the ph of the solution near about 10 so we use ammonium chloride buffer if we will not use this buffer dring the titration ph of sol. will ho lower side


Why is standardization of NaOH necessary for accurate and reliable experimental results?

Standardization of NaOH is necessary for accurate and reliable experimental results because it ensures that the concentration of the NaOH solution is known and consistent. This allows for precise measurements and calculations in experiments, leading to more reliable and reproducible results.


How much quantity of EDTA dissolved in 1000ml to get 0.01 m solution of EDTA?

To prepare a 0.01 M solution of EDTA in 1000 ml, you would need 37.22 grams of EDTA disodium salt dihydrate (C10H14N2Na2O8·2H2O) or approximately 0.1 moles. Dissolve the EDTA in water and make up the volume to 1000 ml to get a 0.01 M solution.


How you can do EDTA titration reaction?

To perform an EDTA titration, first prepare a solution containing the analyte (the substance being measured) and a suitable indicator, such as Eriochrome Black T. Add a standardized solution of EDTA to the analyte solution until the endpoint is reached, indicated by a color change in the indicator. The volume of EDTA solution added can be used to calculate the concentration of the analyte based on the stoichiometry of the reaction.