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What is the limits for determination chloride by Volhard method?
The Volhard method is typically used to determine chloride concentrations ranging from 1-30 mg/L in water samples. This method involves titrating a silver nitrate solution with a potassium thiocyanate solution in the presence of a ferric indicator until a reddish-brown color change occurs.
Explain role of nitrobenzene in volhard method?
In order to mask Ag+ions of Silver chloride, otherwise these Ag+ ions will react with thoicynate to give silver thiocynate and thus titration reading wiill be much more and chloride content will be high. UV
How would you separate lead chloride from mixture of lead chloride and silver chloride?
One method to separate lead chloride from a mixture of lead chloride and silver chloride is to dissolve the mixture in water, then add hydrochloric acid to precipitate the lead chloride while keeping the silver chloride in solution. The precipitated lead chloride can then be filtered out. Another method is to use selective precipitation by adding a potassium chromate solution, which will form a yellow precipitate with the lead chloride while leaving the silver chloride in solution.
How do you obtain iodine from a mixture of sodium chloride and iodine?
Iodine is not soluble in water but soluble in organic solvents; sodium chloride is soluble in water. Method 1: dissolving of the mixture in water, filtering, washing of the filter, recovery of iodine from the filter Method 2: dissolving of the mixture in chloroform, filtering, recovery of iodine from the solution by air evaporation at room temperature
What method is used to prepare potassium chloride?
Potassium chloride is typically prepared by reacting potassium hydroxide with hydrochloric acid, resulting in the formation of potassium chloride and water. Alternatively, it can be obtained from the process of fractional crystallization of a solution containing potassium and chloride ions.
Why mohr method is better than volhard method?
The Mohr method is typically preferred over the Volhard method for chloride titrations because it does not require a silver nitrate standard solution, making it more cost-effective and simpler to execute. Additionally, the Mohr method is more precise as it allows for a direct endpoint determination based on the formation of a specific silver chloride precipitate.
What is the limits for determination chloride by Volhard method?
The Volhard method is typically used to determine chloride concentrations ranging from 1-30 mg/L in water samples. This method involves titrating a silver nitrate solution with a potassium thiocyanate solution in the presence of a ferric indicator until a reddish-brown color change occurs.
Why is an acidic titration medium a requirement of the vol hard?
An acidic titration medium is required in a Volhard method for chloride determination because it prevents the precipitation of silver chloride as a solid. Keeping the solution acidic ensures that the silver chloride formed during the titration remains in solution as AgCl^- ions, allowing for accurate measurement of the endpoint.
What is the difference between volhard and mohr methods?
The Volhard method is a titration method used to determine the concentration of halide ions in a solution using silver nitrate and potassium chromate as indicators. The Mohr method, on the other hand, is also a titration method used to determine the chloride ions concentration in a solution using silver nitrate and potassium chromate indicators. The key difference lies in the end point detection: Volhard method involves the use of a ferric alum indicator that forms a red-brown precipitate, while the Mohr method involves the formation of a red-brown silver chromate precipitate.
Explain role of nitrobenzene in volhard method?
In order to mask Ag+ions of Silver chloride, otherwise these Ag+ ions will react with thoicynate to give silver thiocynate and thus titration reading wiill be much more and chloride content will be high. UV
Why nitric acid is used in volhard method?
Nitric acid is used in the Volhard method to oxidize Fe(II) to Fe(III) in order to prevent interference in the titration of chloride ions with silver nitrate. By converting Fe(II) to Fe(III), nitric acid ensures accurate and precise results in the determination of chloride content.
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-.
Use the Proportion method to calculate 25 percent of 128?
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Calculate the amount of interest on a loan of 3200 at 6 percent interest for 60 days using the ordinary interest method?
32
What do you call the method to make silver chloride?
The method to make silver chloride is called precipitation reaction. It involves adding a soluble chloride compound, such as sodium chloride, to a solution containing silver ions, resulting in the formation of insoluble silver chloride as a white precipitate.
Speration method for sodium chloride solution and sodium chloride?
if u have sodium chloride solution just heat it..water will get evaporated leaving only sodium chloride
What has the author Elias Elvove written?
Elias Elvove has written: 'The fixing power of alkaloids on volatile acids and its application to the estimation of alkaloids with the aid of phenolphthalein or by the Volhard method' -- subject(s): Alkaloids
