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Why we can not use HNO3 and HCL for creating acidic medium in this titration?
HNO3 and HCl cannot be used together to create an acidic medium in a titration because they will react and form a precipitate of AgCl, which interferes with the titration. It is important to choose a suitable acid that will not interfere with the reaction being studied in the titration.
Why do permanganate titration should be done in acidic solution?
Permanganate titration should be done in an acidic solution because permanganate ion (MnO4-) is most stable in acidic conditions. In acidic solution, permanganate ion is reduced to manganese(II) ions (Mn2+) during the titration. This reaction helps in accurately determining the concentration of the substance being titrated.
Why we used methyl red as indicator in titration borax with HCL?
Methyl red is used as an indicator in the titration of borax with HCl because it changes color in acidic conditions. This allows for the precise determination of the endpoint of the titration, which is when all of the borax has reacted with the acid. The color change indicates the shift from basic to acidic conditions, helping to stop the titration at the correct point.
Best indicator for lactic acid when titrated against standard NaOH?
The best indicator for titrating lactic acid against standard NaOH is phenolphthalein. It changes color in the pH range of about 8.2 to 10, which is suitable for the endpoint of the titration of lactic acid (pKa ≈ 3.9). This indicator appears pink at high pH and colorless at acidic pH, allowing for a clear visual indication of the endpoint of the titration.
Why acid is added in KMnO4 titration?
Acid is added in KMnO4 titration to provide an acidic medium, which helps to stabilize the oxidizing agent MnO4-. The acidic solution also helps to prevent the premature reduction of permanganate ions and ensures a clear endpoint in the titration by facilitating the reaction with the analyte.
Why we can not use HNO3 and HCL for creating acidic medium in this titration?
HNO3 and HCl cannot be used together to create an acidic medium in a titration because they will react and form a precipitate of AgCl, which interferes with the titration. It is important to choose a suitable acid that will not interfere with the reaction being studied in the titration.
Why do permanganate titration should be done in acidic solution?
Permanganate titration should be done in an acidic solution because permanganate ion (MnO4-) is most stable in acidic conditions. In acidic solution, permanganate ion is reduced to manganese(II) ions (Mn2+) during the titration. This reaction helps in accurately determining the concentration of the substance being titrated.
Why we used methyl red as indicator in titration borax with HCL?
Methyl red is used as an indicator in the titration of borax with HCl because it changes color in acidic conditions. This allows for the precise determination of the endpoint of the titration, which is when all of the borax has reacted with the acid. The color change indicates the shift from basic to acidic conditions, helping to stop the titration at the correct point.
Best indicator for lactic acid when titrated against standard NaOH?
The best indicator for titrating lactic acid against standard NaOH is phenolphthalein. It changes color in the pH range of about 8.2 to 10, which is suitable for the endpoint of the titration of lactic acid (pKa ≈ 3.9). This indicator appears pink at high pH and colorless at acidic pH, allowing for a clear visual indication of the endpoint of the titration.
Why acid is added in KMnO4 titration?
Acid is added in KMnO4 titration to provide an acidic medium, which helps to stabilize the oxidizing agent MnO4-. The acidic solution also helps to prevent the premature reduction of permanganate ions and ensures a clear endpoint in the titration by facilitating the reaction with the analyte.
Why was HCL added for the titration f Vitamin C?
Hydrochloric acid (HCl) is added to the titration of vitamin C to acidify the solution and provide a suitable acidic medium for the reaction between vitamin C and iodine to occur. The acid helps in the oxidation of ascorbic acid (vitamin C) by iodine, which is essential for determining the vitamin C content accurately through titration.
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 acid base titration used for?
Acid-base titration is used to determine the concentration of an acid or a base solution by neutralizing it with a solution of known concentration. It is commonly used in analytical chemistry to measure the amount of acid or base present in a sample. Titration is also utilized in industries such as pharmaceuticals, food and beverage, and environmental monitoring.
Why is acetic acid needed for the titration of vitamin C?
Acetic acid is needed in the titration of vitamin C to create an acidic environment that stabilizes the ascorbic acid molecule, preventing oxidation. This ensures accurate results during the titration process by maintaining the stability of the vitamin C solution.
Why we use the sulfuric acid in ferrous sulfate titration?
Sulfuric acid is used in ferrous sulfate titration because it provides an acidic medium that stabilizes the iron(II) ions by preventing their oxidation to iron(III) ions during the titration process. The acidic environment also facilitates the formation of a clear endpoint when using certain indicators, such as potassium permanganate, which undergoes a distinct color change at the endpoint. Additionally, sulfuric acid helps to maintain a consistent ionic strength in the solution, improving the accuracy of the titration results.
Why is acetic acid added for the titration of vitamin C?
Acetic acid is added to the titration of vitamin C to create an acidic environment, which helps to prevent the oxidation of vitamin C during the titration process. This ensures that the vitamin C being titrated remains stable and accurate results can be obtained.
What is a titration and what equipment would you need?
A titration is a technique used to determine the concentration of a substance in a solution by reacting it with a solution of known concentration. Equipment needed for a titration typically includes a burette, pipette, flask, indicator, and a stir plate.
