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Depends on the method used. In general, it helps to dissolve all the sample.
But in case of using manganometry in the determination, then the acid is needed to ensure low pH, because the reaction
Fe2+ + MnO4- = Fe3+ + Mn2+
proceeds only in high pH. If the pH was neutral or basic, solid MnO2 would be created, which is not favorable (we need to know prpreciselyow many mno4- oxidates one fe2+).
What else can I help you with?
What is the effect of adding sulfuric acid in iodimetry titration?
Adding sulfuric acid in iodimetry titration helps to oxidize iodide ions to iodine, which is then titrated with a standard solution of sodium thiosulfate. Sulfuric acid also prevents the interference of other reducing agents that may be present in the sample being tested.
Why there is a need to warm the solution of sulfuric acid and oxalic acid during redox titration?
Warming the solution of sulfuric acid and oxalic acid during redox titration increases the reaction rate, making the titration process faster and more efficient. The elevated temperature helps to ensure that the reaction between the two compounds proceeds to completion, resulting in more accurate and reliable titration results.
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 effect of adding the sulfuric acid before KI in iodometric titration?
Adding sulfuric acid before KI in an iodometric titration helps to acidify the solution and prevent the premature oxidation of iodide ions to iodine. This ensures that the iodide ions react with the analyte (substance being tested) instead of being oxidized by any oxidizing agents present in the solution. Acidifying the solution also helps to stabilize the iodine formed during titration.
How much ml 10 percent lime milk do you add in sulfuric acid to get pH 4?
The amount of 10% lime milk needed to adjust the pH of sulfuric acid to 4 will depend on the initial volume and concentration of the sulfuric acid. A titration experiment will need to be conducted to determine the exact volume of lime milk required to reach a pH of 4. The titration process involves slowly adding lime milk to the sulfuric acid solution while monitoring the pH until the desired pH of 4 is achieved.
What is the effect of adding sulfuric acid in iodimetry titration?
Adding sulfuric acid in iodimetry titration helps to oxidize iodide ions to iodine, which is then titrated with a standard solution of sodium thiosulfate. Sulfuric acid also prevents the interference of other reducing agents that may be present in the sample being tested.
Why there is a need to warm the solution of sulfuric acid and oxalic acid during redox titration?
Warming the solution of sulfuric acid and oxalic acid during redox titration increases the reaction rate, making the titration process faster and more efficient. The elevated temperature helps to ensure that the reaction between the two compounds proceeds to completion, resulting in more accurate and reliable titration results.
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 adding blue tracking dye to the DNA samples?
yes u dummy
What is the effect of adding the sulfuric acid before KI in iodometric titration?
Adding sulfuric acid before KI in an iodometric titration helps to acidify the solution and prevent the premature oxidation of iodide ions to iodine. This ensures that the iodide ions react with the analyte (substance being tested) instead of being oxidized by any oxidizing agents present in the solution. Acidifying the solution also helps to stabilize the iodine formed during titration.
What is the purpose of adding ammonium thiocyanate prior to the end point in a titration?
Adding ammonium thiocyanate prior to the end point in a titration helps to detect the endpoint as it forms a red color complex with the metal ion being titrated. This complex formation signals the approach of the endpoint and allows for a more precise determination of the equivalence point in the titration.
How much ml 10 percent lime milk do you add in sulfuric acid to get pH 4?
The amount of 10% lime milk needed to adjust the pH of sulfuric acid to 4 will depend on the initial volume and concentration of the sulfuric acid. A titration experiment will need to be conducted to determine the exact volume of lime milk required to reach a pH of 4. The titration process involves slowly adding lime milk to the sulfuric acid solution while monitoring the pH until the desired pH of 4 is achieved.
What is the purpose of a titration experiment?
The purpose of a titration experiment is to determine the concentration of a substance in a solution by reacting it with a solution of known concentration. This is achieved by carefully adding the titrant to the analyte until the reaction reaches a neutral point, known as the equivalence point. Titration is commonly used in chemistry to quantify acids, bases, and other substances in a sample.
Why high concentrated of sulfuric acid not used in titration?
Titrations require a high degree of precision. Using a high concentration of any acid or base makes it easy to overshoot or undershoot the target amount. Using low concentrations allows you more fine control over the amount of reactants you are adding.
Why is the indicator not added to the titration flask at the begging of the iodomettic titration?
Adding the indicator at the beginning of the iodometric titration can react with the iodine present, which can lead to errors in the titration results. By adding the indicator after most of the iodine has reacted, it ensures that the endpoint is more accurate and reliable.
What is the purpose of adding sulfuric acid?
Sulfuric acid is commonly added to adjust the pH of solutions, such as in industrial processes, water treatment, and laboratory experiments. It is also used in the production of chemicals like fertilizers, detergents, and explosives.
What is the purpose of adding phenolphthalein during titration?
Phenolphthalein is added as an indicator during titration to visually indicate the endpoint of the reaction. It changes color at a specific pH, usually from colorless to pink, which helps the titrator determine when the reaction is complete and the equivalence point has been reached.
