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Why is back titration required in the volhard method?

This method uses a back titration with potassium thiocyanate to determine the concentration of chloride ions in a solution.Before the titration an excess volume of a standardized silver nitrate solution is added to the solution containing chloride ions, forming a precipitate of silver chloride (AgCl). The term 'excess' is used as the moles of silver nitrate added are known to exceed the moles of sodium chloride present in the sample so that all the chloride ions present will react.Ag+ + Cl- AgCl(s) (Ksp = 1.70 × 10−10)Excess WhiteExcess of Ag+ is back titrated with SCN-.


Why silver nitrate is used in argentometric titration?

Silver nitrate is used in argentometric titrations because it forms insoluble silver chloride, silver bromide, or silver iodide precipitates with halide ions present in the solution. The endpoint of the titration is reached when all the halide ions have reacted with silver ions, forming a visible precipitate. This allows for precise determination of the halide ion concentration in the sample.


What is the purpose of adding nitrobenzene in volhard titration?

Nitrobenzene is added in volhard titration as an indicator to detect the endpoint of the titration between chloride ions and silver ions. It forms a red-brown complex with excess silver ions which marks the end point of the titration.


What is the purpose of Volhard titration?

The purpose of Volhard titration is to determine the concentration of halide ions (such as chloride, bromide, or iodide) in a solution by titrating with a standardized silver nitrate solution. The endpoint of the titration is indicated by the formation of a colored precipitate of silver halide.


In the reaction of silver nitrate with sodium chloride how many grams of silver chloride will be produced from 100 g of silver nitrate when it is mixed with an excess of sodium chloride?

When silver nitrate reacts with sodium chloride, silver chloride is formed according to the equation: AgNO3 + NaCl -> AgCl + NaNO3. The molar ratio of silver nitrate to silver chloride is 1:1. Therefore, 100 g of silver nitrate will produce 143.32 g of silver chloride.

Related Questions

What is the process whereby silver nitrate is used as a precipitating reagent in precipitation titration called?

Argenmetric process


Theory of titration of silver nitrate solution using precipitation and adsorption indicators?

In the titration of silver nitrate solution, a precipitation indicator like chloride ion is used to detect the endpoint through the formation of a white precipitate (AgCl). An adsorption indicator like chromate ion can also be used, where the color change of the adsorbed chromate ion on silver chloride indicates the endpoint. Both indicators are effective in detecting the equivalence point in silver nitrate titrations.


How do you figure out salt concentration?

titration with silver nitrate


What any other method that can analyze chloride ion in seawater?

- Potentiometric titration with silver nitrate (AgNO3) - Titration (manual) with silver nitrate (AgNO3) or mercuric thiocyanate - Chronopotentiometry - Using ISE (Ion Selective Electrode) for Cl-


Reverse precipitation of sodium chloride silver nitrate?

It is not possible.


Reverse precipitation sodium chloride silver nitrate?

It is not possible.


Why is back titration required in the volhard method?

This method uses a back titration with potassium thiocyanate to determine the concentration of chloride ions in a solution.Before the titration an excess volume of a standardized silver nitrate solution is added to the solution containing chloride ions, forming a precipitate of silver chloride (AgCl). The term 'excess' is used as the moles of silver nitrate added are known to exceed the moles of sodium chloride present in the sample so that all the chloride ions present will react.Ag+ + Cl- AgCl(s) (Ksp = 1.70 × 10−10)Excess WhiteExcess of Ag+ is back titrated with SCN-.


Will a precipitation reaction occur when sodium chloride is mixed with silver nitrate?

Yes, a precipitation reaction will occur when sodium chloride is mixed with silver nitrate. The silver ions in the silver nitrate solution will react with the chloride ions in the sodium chloride solution to form insoluble silver chloride, which will precipitate out of the solution.


Why silver nitrate is used in argentometric titration?

Silver nitrate is used in argentometric titrations because it forms insoluble silver chloride, silver bromide, or silver iodide precipitates with halide ions present in the solution. The endpoint of the titration is reached when all the halide ions have reacted with silver ions, forming a visible precipitate. This allows for precise determination of the halide ion concentration in the sample.


Why is sodium chloride mixed with silver nitrate a precipitation?

Because the product silver chloride is a white precipitate.


What is the purpose of adding nitrobenzene in volhard titration?

Nitrobenzene is added in volhard titration as an indicator to detect the endpoint of the titration between chloride ions and silver ions. It forms a red-brown complex with excess silver ions which marks the end point of the titration.


How anions reacts with silver nitrate?

When an anion reacts with silver nitrate, a precipitation reaction can occur if the anion forms an insoluble salt with silver. For example, chloride ions react with silver nitrate to form silver chloride, which is a white precipitate. Other anions like bromide, iodide, and sulfide can also form insoluble salts with silver.